I also decided to just hold the coins as I can not control my emotions. I've been studying trading strategies for a long time, but in practice I always get only a loss of money

During the initial days loss will be taking place. Little by little can overcome it, while very few will be successful in trading from the very beginning. So trading really sucks when done without a good basic understanding. So to be on secure side, it's good to keep hold of the bitcoin as price increase happens periodically.