At what point do you think it becomes a problem?

What are the signs you have a self-esteem that's unreasonably high?

I was once told I told by a mental health professional to work on lowering my self-esteem (as I'd get hurt less often). Today I scored 4 on Rosenberg scale (of 30). I'm wondering whether she'd be content with such a result or I should go even lower...

P.S. I have no desire to ask her directly (because **** her, that's why. Should've said this earlier). Just wanted to have a discussion - did you ever hear that high self-esteem leads to pain and failure and so on? Do you agree?