That's why it is coined word "Hold" anyway. Once you hold into it, and that's it. It will just grow but it won't go down. It might particularly looking literally going down but it isn't really going down if you take it logically. You know that cryptos like Bitcoin is gonna be up for a long-term hold and variation of trends happen. It is only two : the bear and the bull as we know it.

Regarding to your second to the last line, which is trade without any big of an emotion. It is sad that is gonna be easy to pull off emotion in trading. The feeling of regret that many people can't handle is what makes sense that emotional trading is sometimes unavoidable for some people.