Niche Sub-Category Clarification

I couldn’t find the answer to my question anywhere so I thought I would ask here. I know John has the three main catagories as Health, Wealth & Investments and Relationships. When going over the niche worksheet, I wasn’t sure which main category to put spirituality or self help fell under. I was thinking health, but I know self-esteem is under relationships. Can someone shed some light on this for me?

Thank you!

Jill Button