Discipline: Do not consider painful what is good for you.
One thing I have seen again and again is that certain people consider criticism — any form of criticism — as personal attack. It does not matter that you make it about the issue, the behavior, the work, and not about the person. These people think that if you criticize their work, or their behavior, or their arguments, or whatever but their their person — it’s an attack of them as a person, their value as a human being.
Looking back, I’ve encountered reactions to criticism like:
- “stop taking everything I say literally”
- “stop being so judgmental”
- “stop teaching me”
(not sure about the translations here, it was emotional, and let’s just say these people resented being taught they were wrong, even if you provided evidence and argued well)
And personally, I think that’s (almost) the worst thing a person can show.
If you are creative, if you want to contribute, hell, if you want to improve, you need to be open for criticism. Not trolling, not abuse, but other points of view, esp. if they are well argued for.
At least, if you actually want to be good (for something), and not just appear to be good (at something).