Preschool or Grad School

An ongoing debate in my mind whether to return to my doctorate studies or not. But, if not, then what shall I do?

Here are some career paths I believe I'm qualified for:
++ Research Assistant, University
++ Research Assistant, Biotech
++ Science or Math Teacher
++ Personal Trainer/ Fitness Instructor
++ Group Fitness Coordinator

Here are the careers I am most interested in:
++ Physical Therapist
++ Entrepreneur, own craft line
++ Entrepreneur, own sewing/craft boutique
++ Preschool Teacher, Waldorf style

Nothing in the first list gets me super-excited. Physical therapy is my most-desired career, and requires the greatest investment in time and finances. Being a Waldorf teacher is incredibly appealing, but would necessitate moving out of state and two solid years of study. Although, I could then ensure my children the education I want for them. I have a feeling my entrepreneurial spirit will come alive once I finally choose my career path. I will either eventually own a PT clinic or start a preschool.

I know I will do well once I focus my mind. Right now, PT is my answer, but I'm leaving myself open to change. This issue used to bother me so much more before I knew we were buying a house. I think because I knew that we would not be in the position to buy a house until I was really contributing to the income flow; but now that we've discovered we can buy without me working, my options feel less restrained. I feel less guilty about returning to school.