Bill Gates says that he can become enthusiastic about almost anything, so he chooses very deliberately. This can be very powerful, as we see.

Take a very close look at the way you move between interests. Did you move to a new interest based on enthusiasm? Or do you lose interest in the previous topic?

If you have the same flexibility as Bill Gates, why not choose to make the biggest impact you can, in the most practical fields possible?

Energy for example. Or water.