In a nutshell, the movie Regarding Henry is about a charming, very competent but unethical lawyer who gets shot in the head and this somehow causes him to acquire a sense of ethics. It's got a lot of great scenes I really appreciate, from the clueless upper class jackass getting himself shit to realistic details about how impaired memory works.
At the end of the movie, in order to make amends he takes key evidence to a family he shafted when he was the lawyer for the other side and quits the firm, telling his secretary "I said when" or something like that.
I know why a lot of people imagine they can't make other choices, morally better choices once things have gone sideways but:
A. They are wrong.
B. If you accept excuses and justifications, then that's all you will ever get from people.
Yes, I'm fully well aware that there can and often are extenuating circumstances and sometimes wanting a better choice means trying to invent new options that don't currently exist.
And not bothering because it's hard or will likely take a long time is still an excuse. It's still a justification.
If having ethics and also making an adequate living were easy, we wouldn't have so many religions and philosophies, therapists and self help books.
No matter what shit you have done before and no matter the price you expect to pay for deciding enough is enough, you can ALWAYS say "That's a bridge too far for me. That's a NO from me."
But most people just do a zillion worse things AFTER their first bad act, often in the name of trying to cover it up.
I wish it were different.