Also, accept the fact that once you execute the trade, there's always a chance that the price will go up afterwards. You can never tell the movement of the market. So if you are in profit, just be grateful that you are in the positive side but if not, you have other chances to get it back. Because once you completed your order, you can't reverse it, so you need to move on and not regret with your past action. I believe everyone experienced that even the long timers or so-called trading experts.
Market will always move after you sell, it could be down or it could be up but it will always move, you can't expect the market to stay still until you get back in once again whenever you feel like it, or just drop after each time you sell so you could buy exact amount of bitcoin again but for cheaper.
It means there will be times when people sell and the price will go up, it doesn't happen once in a while neither because bitcoin is something that goes up in the long term so you could sell during that period as well. This means we are going to sell at times when it goes up 100% guaranteed, as long as you are a trader in crypto, that is a thing you need to get used to. I am hoping that we will get to live in a world where we always make the right trades but let's be honest there is no way that we will make profit at all times, sometimes we will even lose money let alone not earn max amount.