I know the feeling, but wouldn't it be great to be able to cash out some to rebuy later when the price dropped 5x again?

I didn't have the balls last rally because I just got into bitcoin (could've made 50% in the Nov 2014 rally) and was high on endorphines from the constant rising, but if it happens again I plan to sell parts at different intervals on the way up. Not sure at what level I'm going to start though, but historically after a spike the crash always came close or between to the previous ATH and 2*ATH.

Never wrecking I know, and that is why I will never put 100% in either fiat or bitcoin.