When you do something well, you feel good. When you do something good, you feel well. When you fell well, you find it easy to be kind to people, to be happy with them and to smile. This often lead to your doing good: you help someone, or fix something that needs to be fixed, or sometimes even do what you are asked to, like clean up your room. All of this because you have done something well, and you feel good. So, doing well matters a lot!
When you do something poorly, you feel a little angry, a little sad, and a lot as though you have failed. Now, failing is very hard: when you fail, lots of people are likely to tell you you’re a loser, stupid, dumb, of anything else that makes you feel worse. They do this because they are afraid of doing something poorly, and they don’t want to feel bad. They don’t want to feel bad so much that they blame you for reminding them. So, often they hurt you rather than helping you or supporting you. It’s strange, but that is often how it is. And then, because you are feeling bad twice over, first because you have not done well, and second because others have made you feel worse. you can certainly guess what happens! More bad feeling goes around, and everyone ends up miserable.
Doing something well matters a lot; feeling good matters a lot!