I will agree with you that many times people have unrealized potentials in terms of both increasing their income and decreasing their expenses, yet there are also likely cases in which people are struggling within their own best efforts, and so they have difficulties (and perhaps even impossibilities) increasing their discretionary income.
Nothing is impossible when someone has a plan in their life and to achieve a much better financial source requires hard work by relying on existing opportunities and when we want to change our lives for the better, then every effort must be made to grow a much more stable income. The existing potential needs to be increased and at least be able to meet the needs of life and continue to try to set aside a little money to start investing. It may sound difficult for some people who do not have a steady source of income, but it does not mean it is impossible if they are willing to fight.A newbie no coiner or low coiner does not need a stable income before investing into bitcoin, yet he does need discretionary income to get started investing in bitcoin.
Of course, anyone in their first whole cycle should not be too preoccupied by price in the first place, especially if they are just ongoingly accumulating bitcoin, unless maybe they had front-loaded their investment, which might cause them to be more concerned about such a thing, even though I consider that even someone who might have had lump sum invested in bitcoin in recent times, they likely should be supplementing their lump sum investment by DCA and/or buying on dips...
Exactly! And I believe about 60% of us on this thread are newbies or are likely in their first cycle(not including you as "us" 
), whether they invested a lump sum earlier or are just accumulating gradually over time.Those who invested a lump sum earlier would have accumulated more Bitcoin in the $50k-$60k range. Even with the correction to $73k, they should still be in profit. However, they might be thinking about the potential profits they had when Bitcoin was above $100k+ (especially if they were heavily focused on the upward price chart). But to me, this correction is like having an opportunity to accumulate near their previous accumulation point, thus hoping for even greater ROI when Bitcoin reaches $100k again.
Hence, for the DCA investors, investing small amounts they can afford periodically, the recent price movements to $85k shouldn't represent a significant drop in their portfolio, at 73k maybe some little obvious drop as well compared to the profit made ( the capital should still be intact to some extent) , did remember we spent some time within 90k~100k,although it depends on their entry points and how frequently they've been accumulating. Some entries would have been made above $100k and would have also had some effect in their portfolio yet should have payed off already !at current 90k if they've continued DCAing in the DIP.
Also, I agree with supplementing lump sum investments with buying dips or DCA. Everyone is free to choose whichever strategy suits them best, especially if they are used to lump sums. However, I do think buying dips is a good approach, but that will depend on the portfolio status. It could be done similarly to DCA, but with opportunistic buys during price dips.
You seem to be focusing a lot on the BTC price, and surely if you are largely in your BTC accumulation phase, then I see little to no reason to even concern yourself about the extent to which you might be in profits or not... since many times guys might be thinking about 10 years or more before they even start to consider selling parts of their stash.. . but yeah, some people feel that they cannot wait that long and they maybe are confused about their investment timeline.
I personally consider that no one should have investment timelines that are less than 10 years unless it is for age and/or health purposes, so otherwise, a guy might spend a couple of cycles accumulating BTC and even a whole another cycle just holding before he might consider starting some kind of a sustainable withdrawal that might be based on price and/or time.
When I started investing in BTC in late 2013, my portfolio was not really in profits for about three years.. even though surely, I did start to worry less about it after 2 years since it was close to break even at that point and it was holding its value, so yeah, I do understand that our morale can be affected by perceptions about our bitcoin holdings being in profits, yet really, for any of the newer investors, it seems better to try to focus on ongoing accumulation rather than concerns about the extent to which they might be in profits or not.
I am new to this forum. I have been on this forum for a few days and I registered. And after that I asked for help in Beginners & Help. Many people gave me many ideas and helped me regarding investment. Now I am willing to invest. But I have no source of stable income. I am still very young and I am studying. I will not be able to do any job along with my studies. I thought that I will invest some amount of money from my father.
Your question may have largely been answered by Tmoonz - yet maybe I will just supplement that answer by suggesting that you need to treat whatever your source of funds in a way to ONLY invest into bitcoin after your expenses are taken care of, and if you are getting a weekly or monthly budget from your father, then is that amount reliable and/or steady so that you might be able to count on a certain amount of that money that you can draw from it to invest into bitcoin or maybe you have to figure out your expenses first. Presumptively your father is giving you the money based on his expectations of your expenses, whether you are having to report those expenses to him or not and/or whether he cares if you might be investing some portions of the money that he is giving to you might also be a question regarding your relationship with him.
Of course, studies are important, since presumptively you are considering that at some point your getting through school is going to help you towards employment - and/or if you have some decent ideas about your future income then you might be able to anticipate how you might transition from receiving money from your father towards receiving money from an employer.. yet in the meantime, you may not necessarily be expecting to draw from your bitcoin but to keep on building it.. once you transition to receiving income from someone other than your father.
If you follow through posts in this thread, we also talk about cashflow management that involves building up back up funds, and surely you might not feel any need for back up funds if your father might be serving such purposes, so therefore it may well continue to be important regarding how much he would continue to serve as your emergency fund or if you build separate funds for that, which part of the reason to have emergency funds is so that you do not have to dip into your bitcoin at a time that is of your complete choosing which for you might well be considered to be 10 years or more before you would be tapping into your bitcoin (that is if you are trying to treat bitcoin as an investment rather than as a trade or gambling with it).
Depending on the rate at which he releases funds to you, you can gradually plan with the funds by removing a very small fraction to invest in bitcoin not minding the bitcoin value of any dollar you invest. You best start by investing, not trading. As a young person still under parental care, even more so, adults who make their own money and decision, Trading is not an option. Invest gradually and keep leaving the funds there. Depending on your level of study, you could be surprised at your bitcoin stash after leaving school and starting your own job. By then, you are no longer a newbie even though you're just starting your own job. But in all you do, don't get into bitcoin gambling and manage the zeal to invest Aggressively which could make you go back to your father before your next stipend which could also raise questions as to what you've used your money for. Some fathers may not mind if you tell them you're investing in bitcoin, others may take it seriously and frown against it. You know your father, so invest cautiously.