If ever you want to be succesfull trader at stockmarkets you need be at least a third like a "Horsetrader". The other two thirds you can split to "mathematiks" and "analysis" or what ever you like.
But for one third you need to be a horsetrader.
And that means sometimes you need buy "shit" low to sell same "shit" higher and that you need to sell it, before this bubble of "shit" is going to burst. Or other will do same and earn "your" money.