I have made a lot mistake I regretted and I even did one today. This mistake was as a result of inpatients. I invest in a coin 40$ when d coin was at 0.00098$ and have 31k+ of it but when it goes to 0.0019 I didn't sell I was waiting for it to go beyond that until it fell to 0.0004$.
I also invested in ETH when it was 2300$ waiting for it to climb up to 2800$ but trust me I lost till it get to 1200$. All this mistake was due to greed.