Remember if you are short-trading, avoid being greedy too much. In addition, even if you have the power to initiate your trades, DO NOT forget to remain 10% of your profits overtime. Imagine, you just set aside let's say around 100$/week, by the time you retire, you would be able to enjoy those winnings in the LONG-TERM.

In short, don't be afraid to cash out your profits. Even if garnering a profit in trading may be relatively difficult, avoid being greedy and as soon as you profit, decide on whether to cash it out or not. Be ready, however, you will be facing lots of mistakes and learnings along the way.