The 1st principle: never lose your money.
The 2nd principle: look for opportunities and avoid big risks. Return must be greater than risk.
The 3rd principle: pay taxes.
The 4th principle: create a diversified portfolio:
various classes of assets, investments in each class of assets, investments in different markets, countries, and currencies + it's necessary to distribute investments in time.

Remember that there's no ideal time for investments. However, if you regularly invest in different assets,  you'll reduce the risk and increase the return in the long term.

6 main mistakes causing to fail:
1) Subjectivity in perception.
2) The belief that today's trend will last forever. Today's winners are tomorrow's losers!
3) Overconfidence in your knowledge and skills.
4) Greed, impatience, passion.
5) Geographic limitation.
6) Negative mood and the fear of losing. As we all know, people remember a bad experience much better than a positive one. We're afraid of losing money and lose it, in the end, because of our wrong actions.
Money is emotions, and we should be positive. If you don't control your brain - it will control you!
80% of our success is our psychological mood and the rest 20% depends on instruments and methods. Stop set yourself up for failure!
Of course, I understand that you won't become rich and successful quickly after reading my post. But I want you to focus on the positive!

Tell me, please, what kind of methods of psychological training you use? Thnx!