Even if you’re passionate about something, it’s challenging to sustain your individual motivation level across time. There are times when you feel very motivated, as well as troughs in motivation.
The benefit of being part of a group is that your group members can pick you up when you hit a trough in individual motivation. The combination of support and, depending on the environment, healthy competition that they provide are antidotes to a motivational trough.
The less you like doing something, the greater the positive motivational impact of doing that thing as part of a group.
Exercising is a clear example of this. You exercise harder when there are people around you than when there are not. This effect is particularly pronounced when you’re part of the same training class.
The effect also extends to your personal and professional life.