Don't get too worked up about it. I ended up on the 7 year plan for a 4 year degree because of my mental state. I was hospitalized 4 times during college, didn't finish 2 complete semesters (flunked one, medical withdrawal the other), took a year and a half off in between things, and withdrew from more classes than you'd think imaginable (kept just barely enough to keep my financial aid). You'll finish when it's right for you. And yes, my parents paid for the majority of my education too. Don't let the guilt eat away at you.