or may be buy low sell high ?
Lot of noobs traders , don't control their emotions and make worst mistakes : buy at high price and sell at lowest
how to control this ? = put orders (buy/sell) and close the platform
You buy at random without analyzing first, so it happens buy high sell low. To stop this is learn basic trading, analysis, searching for information, reading charts, and I think it's not about controlling emotions but stop buying randomly.