If you think you might want to improve yourself but don't like self help books, I highly recommend reading Dr. Helen's "Self-Help Cornucopia."

I have never liked self-help books. One of the few I did like was Albert Ellis' How to Refuse to Make Yourself Miserable about Anything: Yes Anything! I originally found it from reading Dr. Helen's blog, and it's among the books she recommends in the cornucopia. There are many more listed, for most of the common mental issues and worries (real or imagined) that plague us.

But there are a ton of books out there, and no way to know which ones are good. Dr. Helen is not only a professionally trained psychologist, but someone who admits she was skeptical of self help books:

I used to scoff at self-help books and did not believe in them. I found out through trial and error that I was wrong and that many of them are helpful to millions of people--that is, if one can wade through the bad ones and find the gems.