Do you have anything that you regret in your lif3?
Perceived Opportunity is why most people feel regret. carpe diem my friend
Yes, but passing up an opportunity can easily lead to regret as it's often the case that we don't know how good an opportunity is until we pass it up
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 "
"Well, I think you right some of the way but I don't think it can be anything but good for a young family. I mean there is where all the opportunity is, and it don't mean to say we can't come back here with some profits after we finish working over there if it's so we choose to do.
Millie was quick to speak again. "So just tell me how many people you see coming back from England with anything except the clothes they standing up in?