Kurt, don't be so hard on yourself! You went through a traumatic injury, and you are not done healing. You have been a rock star!
I have found, though I am not comparing myself to you at all, that even though I can hobble around and walk that even though it looks as though I can do the stuff I did, that walking with crutches takes a lot out of me, I do not know when to stop until I am in a world of hurt. I am proud of myself for working so hard even though it is super frustrating because I just can't do shit.
I cannot give you any advice, you are doing really well though, you are good at healing.
When I was in the brace for a long time, after I got out I weighed myself and I was down to 105, which is strange because I looked fatter in the mirror than before, I am finally gaining muscle back, but it is hard to be patient and work slowly.