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.
The worst market crash was actually in 2018. but if you say 2017 momentum I believe you should be in the best market at that time.
but with your own experience, you should not fall into the same mistake.
my advice, manage your psychology well. it's not just for making decisions. This helps us not to be bothered by photos or offers on social media that are currently crazy. There are many impromptu meme project promoters on social media. it's very annoying.