This topic makes me a very happy person.
I'm aiming to better myself in ways I previously thought were unobtainable by an INTP. I mean, I'm a very logical, rational, honest person, but I'm often labeled as INFP because I'm very emotional, too. I use logic and rational thinking to sail through my sea of emotions, but sometimes the ship sinks. I used to believe the world was black and white, in a roundabout, awkward way. I myself have never been black or white, I'm quite the grey person. But I had an all-or-nothing viewpoint for my entire teenage years. Either I exercise 10 times a week for 3 hours each time, or I don't exercise at all. These shortcomings in particular lead to me being anorexic.
But, now that I'm older and healthier, I can recognize all the flaws within me. I could before, but now I know how to change. I also know how to accept myself and love myself, and realize I can't be perfect and don't desire to be. I just want to overcome the more serious of flaws. If I truly desire something, nothing can stop me from attaining my goal. I get that to some this level of stubbornness can be very off putting, but I use it for good. It must run in the family because my sister who has Asperger's has fought like hell to overcome her social anxiety and other autism related issues. Not even 2 years ago, if you told her to talk on the phone, she'd cry and run away and wouldn't come out from her room. But now, she can easily talk to me. Not only that, but my dad said she can comfortably make polite conversation when the situation calls for it, and she no longer speaks in a super quiet, timid voice. She's grown confident, and to me that is the kind of person I'm working towards becoming. I want to not only be proud of my sister and I's accomplishments when it comes to training ourselves to be better people, but I also want to continue being able to explore the world and explore viewpoints--some which may conflict with my own, and that's okay.
And yes, I realize not all life lessons can be taught to yourself.

I'm very aware. Nonetheless, I've taught myself a lot, and it's one of my favorite things to do--to sit in my thoughts, argue with myself, and suddenly have an A-ha! moment.
First thing I want to work on is to not go off on tangents so damn much.