Not all fuck ups can be fixed. As an engineer I've learned how to correct a lot of errors, mistakes, missteps, and screw ups knowingly and unknowingly made. As an engineer I've learned that most things can be corrected, through engineering, through calculation, through judgement, and sometimes through blatant (albeit perfectly legitimate) manipulation of the facts, circumstances, and/or characteristics. We love our factors of safety, our limitations of models and formulae, our seemingly unlimited iterations of possible solutions, and our good engineering judgement.
Like I said, most things can be corrected, and that applies also with life, unfortunately with those errors come the complications and repercussions and consequences. Consequences come in all sorts of flavors, from the mundane and easy to the life-altering and impossible.
Mundane and easy is just that. Mundane to deal with, easy to address and resolve, and relatively simple to move on from. We should all be so lucky our errors and their associated consequences fall into that category. I think life presents us those for practice, for learning and growing, for adapting and evolving. If there's one thing the universe appreciates it is evolution from struggle, if there's one thing it abhors it is decadence from indolence. Ask the Romans about that.
Life, however, and as a side-effect of living one, rarely gives a reason for practice without a comprehensive test covering the lessons presumably learned. Practice the easy ones, learn from them, grow from them and you are prepared for (or potentially avoid) the rest that follow. Therein lies the errors and their associated consequences of the life-altering and impossible. Errors and consequences so big they alter the very flow of life, so impactful theyare not easily (if ever) forgiven, forgotten, and/or moved on from. Sometimes there is no solution, there is no resolution, there is only acceptance.
I've always had troubles with consequences. Not because of lack of foresight, I think I've read enough sci-fi and followed enough of my own life what-ifs through countless pathways and levels and various iterations to comprehend possible futures and outcomes, but I think because my mental exercises rarely understand (much less account for) the personal emotional consequences. My logical mind gets so steeped in the calculations of future algebra it does not (and maybe cannot) factor in the potential resulting emotion as a significant contribution. The fact that my average word size, quite unwittingly, has increased from the beginning of this paragraph to now is evidence of the uncomfortableness of this subject and the fight between those two sides just thinking about it. I don't want to get sad, I don't want to get mad, I just want to think my way through this and do something else. Because this shit hurts and it makes me mad. I'm tired of screwing up, then feeling bad, then feeling worse because (chances are) I hurt someone in the process, then feeling worse because I screwed up and didn't know how terrible I'd feel, then feeling worse because I can't fix screwing up nor the consequences thereof nor get back what I had, then feeling mad because I screwed up and now have to figure out how to live with a new level of miserable, especially if I was actually happy and ruined it because I screwed up. Fucking useless logical brain. End tangent.
Though practice helps, making one better at that thing, it doesn't make perfect. Life doesn't do perfect. It can prepare and help alleviate and help avoid entirely, but it doesn't perfect the making of mistakes, the correcting thereof and the abrogation of consequences. Actually, it might just be there to make you better at deciding what you can put up with and what you cannot. And that is a valuable lesson for another discussion.