Those who sell when they make a small profit are not investors, they are short-term traders. If you want to invest in Bitcoin, you must have such a mentality that my invested money will last for a few years or centuries and I will survive here until the end. Basically, Bitcoin is for those who are patient, not for those who are in a hurry.
Bitcoin investment isn't something that needs to be rushed although there are tons of person who have even gotten the idea of bitcoin through the perception of bitcoin being something thats very easy to make quick funds from which is entirely not the case as with bitcoin investment you will have to sacrifice alot to keep your investment standing strong if not you are gone. But the fact still remains that not everyone is willing to have the mindset of playing the patience.
I think the only sacrifices you need to benefit from bitcoin is by staying consistent and patient. Bitcoin is not a get rich quick scheme, where they tell you to invest $1000 and get $10,000 same time next week. No! Bitcoin is exceptional from any scam activity that is if you follow instructions, because aside investment some person might make some mistakes in making deposit to the wrong address probably by ommiting one character and send to the wrong address and start tagging bitcoin a scam. Those who follow instructions to cross check before making payments and hold for long can testify of the profits they've accumulated so far. You know is very nice and fun to watch your portfolio grow in profits as you are consistently accumulating from whichever strategy suite you, the most important thing is that you hold for long and buy staying patient without making short term withdrawals.
Yes consistency is very important more especially for a new investors that are currently venturing into bitcoin investment there focus should be on continous accumulation of bitcoin until they have accumulated enough bitcoin and hold for at least two or more bitcoin cycles.
Using one of the strategies that is appropriate for the investor like dca, buying the dip and lump sum buying. However buying dip, it is not good to be waiting for a desire dip because the investor will avail himself of so many markets opportunities so instead waiting for desire dip dca is always recommended. Without emergency funds investors cannot be to hold there bitcoin for a longer period of time so to avoid this there is always need for an emergency fund.
I think there is nothing actually wrong if an investor decides to use more than one strategy especially if they have made the appropriate planning that will not affect them negatively from taken care of their important needs, for instance an investor can have an ongoing Dcaing which he does either weekly or monthly and still decide to buy the dip with a reserve funds. Am investors can combine different strategies if it suits them, good planning depending on how money gets to you and how much is made available for investment, investment goals and objectives can also affects an investor choice of strategy or strategies.