I have faced huge losses after 2017 collapse and taken lesson not to invest in shitcoins. Then i follow others as OP have advised not to follow others in investment. Now i am more conscious in investment. I invest only coins and tokens that have solid foundations and strong team, already famous in crypto world like top coins. It ensures me little profits comparing to shitcoins but shitcoin once vanishes it losses whole capital.
Everyone makes mistakes. The most important thing is to learn from those mistakes and not to repeat them. Back in 2013, I lost almost 75% of my coins to various scams and ponzi schemes. But I never gave up. I made sure that I don't repeat the mistakes that I did. And now I am in a very comfortable position because of those decisions. I would have been a millionaire if I had held on to the coins from 2013, but there is no point in regretting about the past actions. But it pains to see so many people making the same mistake that I did once.