Failed

I was married for 13 years. The week after Mother's day 2009, my husband divorced me. I feel like a failure. He was mad because I chose to go back to school and finish my education in the medical field to earn more money for the family. We have one child in second grade. He chose money over me and now my son and I are living in an apartment and wondering why he did this. I am a failure as a mother and a wife.