Imagine not selling when Bitcoin was above $100K
I'm not sure about the others but I have sold Bitcoin over $100k and at $95k and that made me some good profits but I've bought it back during the dip when it was at $80k. Those who know the market often sell and buy again and make profit by doing that. I also placed a short order at $110k but I cancelled that order! 
That is a very smart move you made there, selling when the price reached $100k and rebuying when there is a DIP is a very good practice unlike people who sold and never buy back again or use the money for other things but however, if you also plan to hodl for a long time there won't be need to sell because since the price of bitcoin increases over time, you will eventually make a lot of profit in the future then another thing is also not selling because the price it getting high, but when you have met your target of accumulation and you are waiting for a perfect time to sell.