The least that any one of us owes to anyone, is to be honest with our self-evaluation – for if we lie to our own self, then pretty much that signifies that we are prone to lie to anyone on just about anything. Look, all of us are going to have some regrets in life, or else our life has been absolutely perfect; and in consideration that none of our lives have been perfect, because we are imperfect beings, then it so follows that each one of us must then have some regrets about some things so done are left undone in our respective lives.
To answer the question about what our biggest regret is in life, we have to take the time to actually examine our own life, and the decisions, mistakes, and the regrets that we so have; of which, many people will find that their biggest regret is usually based around what they either failed to do and thus should have done, or something that they did do, that they deeply regret having done. While it is true, when it comes to regrets, that we do not have the power to turn back the clock; we always, though, have the power to learn from our mistakes, mishaps, and regrets to thus make it our desire to not repeat the same type of mistakes, now and into the future. Further to the point, while there are mistakes that cannot ever be corrected in the sense, that perhaps the person that we want to make good with or for, is no longer among the living, or that time has simply passed us by, we still always have the opportunity to do what we can, to demonstrate that we have properly learned our lesson, by thus going forth and helping to do the right thing for our character and for those others that we interact with, day-by-day.
The very first step to self-improvement is actually recognizing what needs to be improved upon, and then taking the time to implement what needs to be implemented in order to effect that improvement. Those that have dug themselves the biggest hole, for their regret is quite large, need then to understand that to rectify such is going to take time, energy, perseverance and consistency. Yet, if we really do want to make amends for that regret, we need to be proactive, as opposed to simply moping about and feeling woeful about what has so happened that we regret – for it is one thing to recognize a wrong and subsequently do absolutely nothing to rectify such, and entirely different thing to put forth the effort to amend such, to the best of our ability, in which, those that are successful in doing so, may well still have those regrets, but at least they can honestly say to themselves, that they have done their part to make good on it, in one form or another.
To have regrets, demonstrates that we have a conscience, of which that conscience, comprehends the difference between right and wrong; so that, those that have made bad choices, are encouraged to do what needs to be done so as to demonstrate that they have learned well the lessons so taught, to thus become a better person for having taken a very bad fall, in which they have subsequently dusted themselves off and then fully risen up to be better for such.