This has happened to me a lot of times before. I have traded or held a lot of coins back in my day and still doing it, but when I started trading some of that, I have lost so much time to time, earned a lot as well I can't lie, so it's fine but those times when I lost, took a lot of the profit part of it back. Yes, I believe that it is very important for people to realize how important your profits are and how quickly they could go away.
Just focus on making as much money as you could, or just give up, because you can't really find anything else that would be as troublesome as the feeling of a loss for futile attempt. Just useless loss you could have avoided.
Yeah, it happens to all of us. We just make a good chunk of profit and then it goes down. This is why I believe that we shouldn't really consider trading as a pure profit thing, there are losses here and there. What I also would like to point out is the fact that crypto is not just a pure thing where you make a ton of money in any method, not just trading but all involved.
Definitely long term investment looks more profitable, but what about the people who did that with Luna? Or bch? bsv? So, there are some coins that will go down too. Which is why I believe trading is still fine, because long term investment could turn out to be a wrong thing if you pick the wrong one too.