Maybe you should have taken that job, asked that crush out, or quit that toxic job before you got too entrenched. And that's all fine and well, most people regret some aspects of their lives.
But the few and brave of us are left with more physical displays of regret. it could be that finger you lost on the Fourth of July, or that giant lion tattoo you got on your back that night you blacked out after swearing you were only going out for "one drink."
Of course, with all regrets, we must learn to move on with our lives, though it can be hard when that regret is a terrible tattoo of a tie on your chest above two even worse drawings of Mario and Luigi. Or not.