have you considered something part time?
for example, do what you do now, and then see what you can do part time to set things up.
while i was in law school (that was my 'day job') i taught yoga on the side. now, yoga is my profession
. i'm going to add in nutritional consulting to that pile relatively soon (i'm working on getting a 'certification'--pm me for more info about it).
so, first i would narrow down which things in nutrition or wellness you want to focus on. then, i would look at what it would take to 'get started' in those areas (do you need certifications, etc, or can you just get going?). finally, i would look around for gyms, wellness centers, chiropractic offices, etc, to determine what opportunities might be available for you.
earlier this year, i considered going into personal training. i asked a gym that i work for if i could give it a try. i trained a number of clients and was very popular, but i learned that i greatly disliked personal training. i much prefer just teaching yoga, doing nutritional consultations, and doing thai yoga bodywork! it's my thing.
anyway, that's a good way do get rolling.