I need some advice from fellow Christian/Saved individuals PLEASE. This is very important to me.?

I have recently gone threw some very rough years.I must bravely admit that I have strayed severely from God's will for my life. I divorced, moved, had my forth child to my boyfriend. I feel like even tho I have lived threw the last three years of my life...I have just recently awakened to this and wonder...How on earth did I get here. This is not what I thought would ever happen to me. The divorce has been a huge guilt for me. I have put my ex husband threw Hell. Threw his prayers and obedience, he has been able to forgive me and still, till this day prays for the reconciliation of our family. I wish sometimes too I could take it all back. I cry a lot and like I said, the guilt is overwhelming at times..for him...for my kids..but most of all because I am not in the will of God and that saddens me deeply. So recently my ex husband said God came to him in a dream and told him to give me $680. So he did. HE GAVE ME $680. I was astonished but I prayed and thanked God for the blessing. Believing it is Truly from God, I put it in savings and decided to pray and ask what I am to use it for. Does anyone have any in put on this? Thank you and God Bless you greatly!