I have few regrets, but one of my biggest is not graduating high school.
Aww having regrets is so negative and maybe you feel that way because of inaction of completing HS?
It's true. What I can I do to get over that feeling?
Since regret is from disappointment, maybe try getting your GED?
Good call - and I did that. I think what I regret most is missing out on the experiences, like prom.
I can see that - Prom is a major high school event. 
Is there anything you missed out on in school?
Regret
Regret is a negative conscious and emotional reaction to an undesirable situation. 
Regret is related to perceived opportunity. Its intensity varies over time after the decision, in regard to action versus inaction, and in regard to self-control at a particular age. The self-recrimination which comes with regret is thought to spur corrective action and adaptation. 
In Western societies adults have the highest regrets regarding choices of their education. 
Definition.
Regret has been defined by psychologists in the late 1990s as a "
your biggest fear and what have you done to overcome it?" Her response: "My greatest fear is actually having regret. In anyone's life, it doesn't benefit them if they're gonna regret something so what I do to combat that is that I just make sure that everything I do it's because I want to do it. I don't do something with any doubts in my mind. I do it with sureness and I'm very confident in myself and in that way, that's how