Worst decision I've made is to skip out of bit coin when it was back at the drawback when it was around the 300 price. I had a gut feeling it was going to recover and make higher gains. I just couldnt find the balls to actually buy in.
we are just a coward that time , did not brave enough to take a risk and choose to play so safe. then full of regret now really not surprising i believe a lot of people have same feeling as you right now. just keep thinking over and over again about "if you bought 100 bitcoin that time you might will have $170,000 by now"
that fantasy only make you lazy , just don't give up and keep thinking positive!