Been there, done that. It's overrated.
Good luck, pal. The good news is it's only pain. You can't really do any real damage, so just use mind over matter techniques and do what has to be done.
I'm sure your advice is better than mine.
I will, however, diagnose the cause of this agony. It's all that high calcium liberalism he's been ingesting. Goes straight to the kidneys.
How are you today?