Not selling would be a terrible lie. How can you keep it from mid-2018 to ~ 6k $ and sell when it reaches X2, X3 is beyond imagination. Because, we can speculate on better buyback opportunities. Can't hold any longer if it blooms at $ 41k. Regret and assertive for this trend? a fine line for greater success.
I'm holding my bitcoins which I brought below $1000. But I took back my investment long back and I think bitcoin has a lot to give in this bull run. Big institutions just started to come in so you will see 100K before the bear market start.