I think Paul says on the get around to it tape that the journes to your goal is much more important than the goal itself, because -to take up your example- you can always have more sex appeal!
What I did, after I hadn't run for a few months due to lazyness, I just listened to the paraliminals with the intent of getting around to running every day. guess what - it worked!
Maybe you could state a goal of being able to get more repetitions out of yourself, or lifting heavier weights, or just sticking your training schedule - even when you don't really want to train or when it gets boring.
I'd say experiment ... I mean ideal mindset can be done in a day

three paraliminals in the morning and three in the afternoon .. ezy!
