My lesson in 2021 is that time waits for nobody, I'll say I was actually too lazy in my cryptocurrency investments. I would have used the little money I had for investment, but I was procrastinating it waiting for more money to come which I waited for a long time.
If you think that you have to invest, don't procrastinate.
Sometimes, there's the instinct that we should sell or buy. It happened to me many times and I think that there's the same for the others.
But we really don't know if that gut of ours is accurate at most times.