I think you should be always in the position where you are happy if the price go up because you make more money and happy if the price goes down because you can buy more crypto.

And anyway never go full sell or full buy, I have seen so many traders loosing their mind because they sold all after 50% profit then the price went X20, if they have sold only half they would still have made a X10.

very simple strategy in order to not mess with your nerves