I know for certain that I chose this life pre-incarnation.
Since a very young age, I've had dreams and visions of a sort of character select screen like a video game, except I'm actually choosing my incarnation. I chose this incarnation because it would be a challenge the whole time pretty much. I also thought it was cool that I would not only be externally fortunate, but internally suffering every day in some way or another. I thought it would be fascinating to try such an extreme life, but still be trapped in enough normality that I couldn't just be disabled (not to offend those with such needs, since I don't need them and thus would only want them as an excuse for me to be lazy, but I know that those who need them need them for good reasons).
I thought it was cool that I would be seemingly at perfect balance, but still always on the edge.
In this life it's a crazy ride, and right now in the crash of an energy drink I feel like it was a bad decision, but eventually I'll be proud of it again.
Did I choose to have my Tourette Syndrome, ADHD, OCD, and all that? Yes.
Did I choose to get addicted part-way to energy drinks? No. That was David's fault, not My fault, if that makes sense.