That's very forward thinking at 17, I was very much up my own arse at that age. That said I've always taken my own path (on a grander scale), but often influenced by others on a day to day basis. That has now changed significantly.
Your point of "no-one is thinking about you" is massive. Getting that in to your head can transform alot of decisions and how your life progresses.
I'm maybe a tad older than yourself, so unpicking mental habits is proving a bit trickier, but I'm here for it. And to that extent I'm not in a position (mentally or financially) to give back quite yet, but wholeheartedly agree that is the natural progression.