stuck between a rock and a hard place

I'm pretty sure everyone strives to live a life without any regrets.... But is this even possible? So often casually we say " i wish..." or "if only .." or whatever. I know there are things in my life that given the opportunity, I would change. I mean, I realize that everything happens for a reason and that a lesson comes from each experience. Sometimes you can't change things so from there you can only make the best of any situation. Even the worse situations can bring about a positive change. I suppose it is a testament to one's character, the manner in which they react. Do you run from it or do you meet it head on?