For those already have a master or doctoral degree in Psychology, PLZ help!!!?

I am currently a college student in Psychology, studying in University of Houston. Got transferred to UH a semester ago. In my school, a minor is required for a degree in psychology. I know I want to be a clinical psychologist/school psychologist (not quite sure about SP since I am not very excited when im interacting with kids. couldnt say im a child lover, just normal. I like them, but not extremely like them.) Nonetheless, I got some question about the transition between degree. I knew ahead that this path requires a lot of schooling, and i dont mind it. In fact, I love school.

However, the financial problem is the real deal. Based on my saving (from working at 18 to now,22), I think I am still able to paid off all my tuition with no debt, to get the Bachelor degree. And to get to Master and Ph.D , I will need more money.

So here is my question, How do you get through the transition to higher education when you cant do anything with a Bachelor degree in psychology? What do you do before you get your master or even doctoral when you got your Bachelor?

Currently, I am just working in a Grocery store with low pay, $ 7.75. It is ok for now since i dont have much billing. But I dont want to stuck in a grocery store forever.I want to be ready to go when i got those degree. Also, internship. how do you get pass your internship especially sometimes they dont pay you? How do you make your living?

PLEASE HELP