Envy

Reality: I get jealous when someone is better than me in something I cared about.

Root cause : I want that thing.

What to do about it:
0. Accept the reality that you felt envy at this moment, but also accept that you have the power to choose the way you react/feel about it.
1. Know that you can achieve something better through applying the principles.
2. Know that people who achieve something great , probably did it because they applied their own principles that works.
3. Know that the other people probably has something for you to learn.