I'm disappointed in myself and I'm not sure who to tell.
What's got you feeling disappointed.
I'm selling my personality instead of selling my talent.
Taking another view point might be a great way to feel better. I believe your personality is just another talent and thinking about it that way could help you feel better about the situation. But if you still feel disappointed about it you should consider stopping because you're just going to feel worse and worse as time goes on.
I suppose that's one take on it.
Yes, just like a good salesman 's talent is his personality! But again, if you feel like you're doing something that's making you feel bad, then you should stop and reassess.