Let go of yesterday. Let today be a new beginning and be the best that you can, and you'll get to where God wants you to be.
When I entered high school I was an A-student, but not for long. I wanted the fancy clothes. I wanted to hang out with the guys. I went from being an A-student to a B-student to a C-student, but I didn't care. I was getting the high fives and the low fives and the pats on the back. I was cool.
As somebody who, in my second marriage, insisted on a prenuptial agreement, I can also testify that sometimes it is an act of love to chart the exit strategy before you enter the union, in order to make sure that not only you, but your partner as well, knows that there will be no World War III should hearts and minds, for any sad reason, change.