Knowledge

There is an old saying that knowledge is power. If someone needs something done that he doesn't know how to do himself, and he's not interested in learning how, then he has to depend on someone else to do it for him.

It can also be said that money is power, since a person with money can hire a person with knowledge to perform a particular task. The limitation with money is that there are some things which one can't hire someone else to do.

If I want to master my own mind to a greater degree, then I have to learn to do that myself. Although someone could be paid to teach me, no one can learn it for me.