What are your top 3-4 trading rules, for example, never add to a losing position?

What are your top 3-4 trading rules, for example, never add to a losing position?

I have 7 high ROI trading habits/rules.

They are as follows :

1. Studying charts : Practice will 10x your analytical skills. Consistent practice will make you find new patterns, edges and setups. New edges and better analytical skills will boost your trading arsenal.
2. Journaling trades : Reviewing past trades will help you understanding your mistakes. Tracking your emotions during entries and exits can improve your psychological edge. Overcoming mistakes and a better psychological edge will improve your trading by 10x.
3. Backtesting : Back testing your system over and over again, by correcting your mistakes, will drastically improve your execution and self discipline level. A better execution and self discipline will sky rocked your RR and win ratio.
4. Planning trades in advance : A step by step plan will help you control your enemies like fear and greed. The trading business is a world controlled by fear and greed. If you can control fear and greed, you will have an insane edge against most traders.
5. Checking rules before a trade : A streak of wins make you feel invincible. A streak of losses makes you take revenge trades. Print your trading rules in front of your PC and check them before you take any trade. Trading is a long term business. Rome wasn’t built in a day.
6. Thinking in probabilities : Thinking in probability will increase your mental accuracy like nothing else in the world. Execute like a robot and manage risk and trades like a casino.
7. Increasing goals gradually : Trading is the most rewarding business in the capitalism era. Your effort and skills will compound 1000x your money, so break your limits.