The entire world doesn't hate your guts, really and truly!
I'm sorry that your powered wheelchair isn't working properly and that you have to use a manual one (I use a manual one, but I've seen how difficult it is for my roomate to use a manual one so I can kinda understand where you're coming from!) I'm sorry that therapy has been so hard for you, it has a nasty habit of doing that when anyone is talking about their past.
You're allowed to feel down, because yes, any sort of physical impairement does affect your daily life. And the whole "walk like regular ppl" thing ... Same here at times. Just have to remember that there are some people out there who'd like to use a wheelchair instead of walk!!
**hugs** to you and please feel free to PM me whenever you want.