BCD

Anyone here used a personal trainer? I mean REALLY use a personal trainer, not just having someone walk around with you to show you the machines and exercises when you join a new club. Personally I think I might get a benefit from using a trainer. I have a bad combination - an ectomorph body and very picky eater, which means I am working my ass off but not seeing the benefits others would see. If I had someone who could help me establish a good workout routine and a diet that I could actually live with, I would get more of a benefit from my workouts. Any thoughts? Thanks.