My main problem is having a weak lower back.
I tend to tilt my pelvis forward when I get tired so that my back winds up incredibly arched, and my spine naturally curves to the right slightly when I'm driving.
We have a TON of books at our house, and I'd like to find a convenient way to store them. Most of them are currently being kept by the laundry area or sprawled all over the basement... and they're getting in the way of everything.