One thing I learnt in coaching is that first you need to be the change to change the world.
You as an individual can do a lot, without spending a penny. You have so much that you can share and yet receive it back in abundance. In the following list, money is not even mentioned.
The single most universal internal block that supresses our growth is fear of failure, lack of confidence, self-doubt, and lack of self-belief
However, it is also true that in a safe environment people tend to tell the truth about themselves and when they do, it is the responsibility of the leaders to help them cope with the shortcomings. But building others self-belief demands that we release our desire to control them.