Never put off 'til tomorrow, that which can wait for the day after.
I know the feeling. After a lifetime of office work (with some 'gentlemanly' exercises of course), I bought a farm in my mid forties.
I don't think I've had an ache-free day since!
I have compiled an awesome list of excuses for not doing stuff, that will allow you to maintain a semblence of manhood, while avoiding any serious work.
POA.