I feel like anything in the medical field really does need some sort of education past high school, and you should evaluate your likes / dislikes / things you are not willing to do. You're also probably going to need to take courses that you think is not applicable to the psych field, but you have to take the general stuff before you can get into the heavy stuff (it's like taking color theory and drawing 101 in order to do [computer] graphic design work).
I can give you an example of likes and dislikes - where you drawn the line on stuff.
I work with someone who's step daughter has said she wants to work in a zoo. The girl is a senior in high school (18) and doesn't have the best of grades... she doesn't even have the best of middle of the road grades. But once she graduates (IF she graduates), she thinks she's going to be able to apply to the zoo to sit and play with the animals all day. However, even the lowest level of animal keeper positions still needs basic certification. Most zoos require the absolute minimum of a full 4 year degree before they even let you pet the creatures let alone do anything else (besides clean their shit). The girl hates needles and from what my coworker and I have looked at for jobs, a lot of positions require you to be able to give a shot (antibiotic / immunization / vaccine, numbing agents for surgery, etc) to the animal and if you can't deal with needles, you can't have the job.
My coworker and her husband are worried about the child, but because she has other things going on (she doesn't live with them due to specifics I can't talk about here.. it's related to the mother and not the husband). They don't know if the girl can really survive on her own past graduation, let alone be able to go to school for something that they think she won't finish.
Don't get me wrong - I'm not saying you'd not finish your education, since you've come here asking for opinions and suggestions. It's a great start for your future endeavors, for sure. But try to re-evaluate where you feel you want to be in the next 4 to 6 years. Raise the bar high, but don't raise it to a level that will cause you more harm that good or give you that door to questioning any mistakes.
If you want to do a startup of any kind, maybe do community college and get an associates in business. That way you have the groundwork laid for creating a company you can take advantage of and succeed with. Listen to your gut and keep asking questions. Be curious about things and learn something new every day. That'll help you 15 / 20+ years down the road if you're concerned an education might not be worth it. At the very least, see if you can apprentice some where that would lead to helping you further an education. Gain the right certificates to get into the right places.