Joining a group to help us improve our fitness and health is a great idea. A group provides us with many motivational aspects that training alone just don't give us.
Have you ever heard the phrase 'Get out of your own way'?
What a great concept! The idea that we are the only thing standing between where we are and where we want to be is empowering and intimidating at the same time.
If you want something different, do something different!
No change will result from taking the same road, doing the same job, espousing the same attitude, and taking the same action.