Aren't you just you? What else is there to learn? I think the hardest part for most people is to just accept they are who they are, not so much as learning who they are...
I've only recently become free from something that led me to nothing but depression and sadness. For the 1st time in years I've actually not suffered from depression, SAD, or even holiday blues. I can actually spend time growing and developing again for the 1st time in more than half my life. There is much of what I know I am and I accept what I am, but there is much of that many do not accept either.