Confused about what my purpose is, how do I resolved this?

I'm 25 and had my life and career mapped out, nursing by the age of 27, own place, maybe a husband and of my lovely daughter in a top school. Ok but my life took a turn, I failed my nursin program by 2 points, and I still got debt smh. So now I plan on taking a semester off to demolish this debt, by January I should he back in school. The problem is, my motivation for everything has either disappeared or died. I know failing that nursing program has me questioning my purpose and even makin me have self doubt. I know I want to look into dentistry but what deprives me, is what it requires to become a dentist. I do have it in me but I think I'm a lil weak mined, meaning I let people opinions get the best of me. I work around nothing by nurses, so of course they will only tell me to go for nursing, which they always do. I don't mind it, but I believe that's not for me, not for the next 40 plus years anyway. I'm thinking long term when it comes to dentistry. I can own my own business, I can make my own hours, I don't have to answer to no one but the client, not the doctor, nurse manager, supervisor, or whomever else. The last thing on my mind is money, because I rather enjoy my job more than anything but both pay is excellent, especially a dentist. I have distraction, my home, my shift at work ( nights full time), men ( I like but then it's always something), and my Childs father. I know moving will allow me to clear my head, I been in this same place for 25 years, I been with a man for three years off n on and not it's officially off, I need change I tell ya and maybe that will lead me to a new path... Ugh