I need major life advice

I'm 20 years old and have a two month old baby. I just inrolled in school for a four month dental assisting program. I did this 1. Because I have some interest in teeth, I would specialize in assisting with braces most likely because I want them& plan on getting them and also think it's important for other people who are self conscious about their teeth to get the same treatment (: and 2. Because I need to make more money then a minimum wage job for my daughter. HOWEVER, do a I like dentistry? YES. is it my passion? no. My dream job would be a substance abuse counselor. I have experience with that very personally and would love to help people that are stuck in that cycle. So basically I would work as a dental assistant and make some decent money while I go back to school in the future for addiction counseling. Is that dumb? Basically it would be a career switch I get that & wouldn't die if it would make more sense for me to stick to dentistry but what's everyone's thought on this ? Sorry if it's a lame: boring topic but I need some real advice people! Thank you.