Some people (most?) operate better when there are external motivating factors and a sense of accountability. It's hard to do something for yourself by yourself.

Some people (most?) operate better when there are external motivating factors and a sense of accountability. It's hard to do something for yourself by yourself. It can be easier when friends, family and even strangers are there to offer encouragement and hold you to the goals you've set for yourself. For example, I think that's the biggest value add of joining CrossFit vs joining a regular gym.