Hey folks,
I'm injured at the moment and haven't trained in three weeks - kinda going a wee bit CRAZY now....

I ride a motorbike and I 'dropped' it a few weekends back. By sheer reflex action, with no time to 'think' about what I was doing, I grabbed hold of it as it fell away from me and wrenched my neck/shoulder/back and got a small tear in my bicep. I'm bummed out bigtime. Anyway, long story short, I'm having physio and it's going as well as it can.
The physical side of injury is uncomfortable/painful but the mental side is what is getting to me.
Any advice from those who've had a forced lay-off due to injury, or who continue to train with limitations is much appreciated.
Particularly:
1. how do you stay positive? I feel like my hard work has been lost.
2. do you/did you lay off completely? I could 'maybe' do some treadmill walking next week but not sure if this will push it.
3. did you adjust your diet - I'm conscious of energy in/energy out and I'm not as active as I have been.
4. I feel like, and have obviously lost momentum from my regular routine. Will I get that back or will I just slide into being a couch potato again. How did you/do you ensure you'll keep going?
Not easy questions, I know. Thanks folks,