Resources on fear of losing / making less money?

I see a lot of resources on making more money, debt, and having money. That is not my situation.

I currently make a lot of money as a VP at a corporation, and I want to start a life coaching business. I’m terrified of not being able to make as much money, and would love to get over that so I can start making even MORE!

Are there any resources within scholars to help with this challenge?