Earlier quoted context omitted.
Serious question?
Yeah. I realized after writing that it might appear to mean "in what ways have you changed" but I really did mean "how did you affect change in your life?"
Second, I always knew there was something wrong with me socially, and I had the vague intention of improving at least as early as junior high. At first my ideas were pretty vague, and my progress depended on a trickle of new ideas from the pop science reading I did. Evolutionary psychology helped me see social relationships through ideas I already understood. It was always popularized hand-in-hand with a really bleak and brutal view of life (the perception that EP was just the paranoia of sexually insecure men, dressed up in scientific language, was probably created by some of the books I read) so it may have hurt more than it helped. Still, I started to get some insight into my limitations in high school. Then the book Emotional Intelligence came out around the time I graduated, and I read it cover to cover several times. It was just a self-help book, but it instantly clicked with me and gave coherence to a lot of half-formed ideas I had. It gave me an agenda of concrete items I could improve on. I remember there was a little section about how savvy kindergarten-age kids approached other children that actually helped me make friends in college.
Third, when I went to college I got a frame of reference for how normal, well-adjusted people who were informed and liberal would act. Back in high school I really couldn't parse out which differences between myself and everybody else were due to me being better-informed, more critical, and more liberal and which differences were due to me being socially retarded. Not only did I not really like the people around me, which made my social problems a lot more understandable than I realized at the time, I was literally afraid to emulate anybody around me because I might pick up customs that would make me look stupid when I finally broke out into the "real" wold. College released me from that. It's amazing how much more natural it is to emulate and learn from people you actually like, and whom you would like to be like.
Fourth, I realized that I had some emotional issues that were interfering with the proper functioning of my social skills. I.e., I'm a lot more socially competent when I feel good about myself. Trying to be social while you hate yourself is like trying to boot a computer with an inadequate power supply. Taking care of your emotions makes everything else easier.