what the hell should i do?

I have 3 options in my life right now. I am 26 and I want more out if my life and money. 
I am very happy btw, not that I need money to be complete, but i want to travel the world and be successful. 
Options:: 
1. Continue to study psychology and become a Doctor , which Takes me 4 years. 
2. Open my boutique which I've wanted for the last 7 years
3. Continue at my job which is demanding but good and flexible. But I will be average always, meaning I will not earn more if I work harder and income will stay normal. 
Now I have a pretty good lifestyle, house, luxury car (in my eyes), etc etc. But i do have room to improve and reach higher goals. 
As of now neither me nor my fiancé want kids, so I am basically free to make mistakes and try anything I want without worrying about anyone else, except for my fiance which thankfully helps me no matter which route I take. 
Has anyone been trough this? If so how did you decide on what to do?
please note I know "my passion" its what I should  follow but lets be real also money, we need money to survive, to buy food, to get to work, to get clothes etc and I do not like to have necessities or cry about not having enough to pay bills. Been there, done that.