Do you notice something in your character that is not quite right and needs improvement?

I wouldn’t say I am the worst type around, but I have my flaws. Even though I try to work on myself and get better in every way, I notice that due to insecurity, I get pangs of jealousy(not intense or nasty)and now and again a competitive streak comes out. I don’t like that, I am fully aware of it and feel it spoils other good character traits I may have. Do you notice something about you that you don’t like, which flaws an otherwise good person and needs working on?