Exactly, that pressure to catch the train often leads people into bad decisions like overextending or misusing funds meant for something else. The beauty of Bitcoin's long term parabolic nature is that you don’t need to rush. Just stick to your own pace, DCA with what you can afford, and let time do the work. No FOMO, just patience.
A person should never think that he is too late to invest. Keep one thing in mind, if you know about Bitcoin today, you are much ahead of many people who are not aware of what Bitcoin is. So first you need to start investing and at the same time you need to reduce your extra expenses. So that you can invest more money. Always try to keep yourself stress-free so that you do not get too scared if you see a decline in the market. Hold your holdings for the long term, you can benefit in the future.
A person who missed out on Bitcoin when the price was very low shouldn't think that it's too late for him to invest in Bitcoin because we aren't even sure he would have invested in Bitcoin if he knew about Bitcoin when Bitcoin wasn't even up to $1. The Bitcoin price is still in the level where new investors can comfortably accumulate it, so instead of thinking that it's too late to invest in Bitcoin, he should start accumulating Bitcoin with the DCA strategy for 4-10 years, and if he's consistent in his accumulation, he will accumulate a good quantity of Bitcoin and eliminate any chance of regret in the future. If there's a decline in the market, being stress-free won't save you from getting scared. It is when you use discretionary income to invest in bitcoin that you won't be scared if there's a decline in the market because you can use your discretionary income to do whatever you want.
It is very natural for a new person to be scared. But I do not agree with what you said at the end. Because you want to understand that prudent money has no value. Every person works hard to earn money. We invest with prudent income, because you do not need this prudent income money very much. With which you can easily keep it for 5 years or 10 years. For example, if you had not invested, you would have kept this amount of money in the bank and withdrawn it when you needed it. If you did not invest now, but you would not have thrown away your prudent income money but would have kept it somewhere.
By investing with prudent income, if you do not face any kind of financial crisis, you will not need this money until that time. And if you invest with the money you need, then you may need that money before the end of the period, then if your investment is going down, then you can sell it, so prudent income is very necessary for investing.