"I never had to choose my subject- my subject rather chose me"

Ernest Hemingway once said that he said never had to choose his subject; it chose him. Every day, something new happens. Even a routine day is unlike every other day before it; it is unique. Even still, uniqueness in continuity is a subject. Hemingway didn't choose his life, his life chose him; even on the most uninteresting of days, the uniqueness of life was still a subject. The same is true for the rest of us, too. Even the smallest parts of our everyday life are worth exploring. For example:

Fears- Not being successful, not being "good enough"
Annoyances- Loud chewing, uncooperativeness, ineffectiveness, unprofessional people
Accomplishments- Editor-in-chief of the school newspaper, NSHSS Ambassador, author/director of a short film
Confusions- Why some people are more different than others, calculus (that was a joke)
Sorrows- Not letting myself have more fun
Dreams- To impact the world in a big way
Idiosyncracies- All but obsessed with figuring things out
Risks- Spending a lot of time building a resume vs. taking time to relax
Beloved Possessions, Now and Then- Camera (now), "Summer Book" (now), first computer (then), "Summer Book" (then)
Problems- Focus, work ethic

I didn't chose what things confuse me. There are things in life that our minds simply cannot work out; for me, I have a hard time understanding other people. They say you can tell what someone is thinking or feeling just by looking at their face. They say you should enjoy getting a hug, because it's an important social connection. I don't get it. Why do my mouth, eyes, shoulders, hands, head, and belly move uncontrollably and without my knowledge, but other people's don't? Why do other people like getting a pat on the back, but I don't? Did I do something to make myself unlike "normal people?" I'm not sure. I'm confused.

That's part of me. Part of my life. Part of my most boring, uneventful, routine day. And yet, it is a subject in my life that I think about every day-- just as Hemingway said. I didn't chose any of those any of those things,yet they are so prevalent in my life that I can write for hours on them. Here's another question that comes from all of this: if things I can't chose are some of the most important things in my life, is that proof of destiny or free will?