My priority is to turn people - especially kids - on to sports and being active so they don't even have to think about it being good for their health. If people participate for the fun of it, and believe me - it is fun, then fitness programs will be much more successful.
Don't be discouraged by a failure. It can be a positive experience. Failure is, in a sense, the highway to success, inasmuch as every discovery of what is false leads us to seek earnestly after what is true, and every fresh experience points out some.