Generally, this is the type of regret I finally came to terms with. The bottom line is that you did not know the future when you made the initial decision. Afte

Generally, this is the type of regret I finally came to terms with. The bottom line is that you did not know the future when you made the initial decision. After the fact you have the information that would have made a difference but we CAN'T, no mater how hard we try, foretell the future. What you are are actually regretting is a fantasy. Look at the world around you and you'll see many places where you wished you could have made a better decision but you can't be upset over them. Again you can't know what the future will be. None of us can so don't beat yourself over something you had no control over. Additionally, in your case, changing someone is not possible unless they want to change. You can only learn from the situation and hope to make a better choice in the future.