My 2012 goal is to make my co-worker a Youtube sensation!!

[UglyPug]

He's 250lb now. I helped him lose 90lbs in 6 months with diet and mental motivation. And he's a good sport. I'd like him to drop about 30lb then start the courses,

Damn that is a lot of weight to lose in 6 months! Nice!

Now that you have instilled the mental motivation, and he has seen such excellent results, it will be easy for him to continue to a targeted goal. That would be a great testimonial for a personal trainer.