Is she right?

I'm always talking to my best friend of 10 years about the problems in my marriage and today she called and told me that she can't hold it in anymore and she really thinks I should leave my husband. She finds him unsupportive and he's constantly making promises that he doesn't keep. A couple months ago he said he made an appointment to see a therapist and he never went. I thought he was really changing for me but it was all just a bluff so I didn't pack up and leave. She wants me to come home to my parents but I know my mom would never understand. Before I talk to her I would like a little more advice. Do you think she's right?