Maybe I need to use this diary more, since I'm spamming my friends with my grievances. More than I should.

My longest running folly was the way in which I oppressively forced myself to internalize absolutely everything. I existed almost entirely in my head, and this made it really hard for others to get a read on me, and it made it really hard for me to relate with or socialize with others.
It also stunted the development of my personality, and I'm only now starting to pick up the pieces and learn to externalize.