From his Reddit AMA:
What are five things you’d change about your life if you could?
Thank you for your sneakily courteous question, which is actually five questions. I suspect my list looks much the same as anyone else’s. I want to achieve my career goal of becoming an astronaut (or taikonaut, or cosmonaut). I want to be a father, possibly a better one than my own, but we judge these things differently in my culture. I wish I had better time management skills; I work to a different timescale and speeding up to human tempo is hard work. I’d find out what happened to a woman I introduced to Kima a long time before she was ready, since I would like the chance to apologize. All my efforts to locate her have been fruitless and I feel very bad about that. And ….I’d never talk to another lawyer. I like my lawyer as a person, but the legal system in this country is what happens when you condense stupidity and then fossilize it.