I know you said to stop seeing and cut off the person who is no good for you, but what if you have a child with that person? How do you not get sucked back in?
Sorry for the delay in responding. I was out of town.
You're in a tough spot. You want to put the guy out of your head, but you have to maintain some sort of relationship with him because you have a child. The best advice I can give you is to write down on a piece of paper exactly what what he's done (every single thing you can think of) that brought you to the conclusion that he is no good for you.
Carry that piece of paper around with you. Read it when you get up in the morning. Read it whenever a happy memory you shared together pops into your head. Read it before you drop off to sleep at night. Read it before he shows up at your house to visit your child. Go into the bathroom and read it after he gives you that smile that makes you want to forgive him for every bad thing he's ever done.
I don't think you should walk around harboring a grudge (because that's not good for your health), but being with a man who you know is not good for you is certainly not good for your health, either. So you do need to remind yourself-- constantly--why you want to break free of this guy.
I don't know if you signed your name with a lower case "M" because it's a style thing, or if subconsciously, you think you don't rate a capital letter. You do.
You deserve the best in life. Please start to think about what the "best in life" means to you in terms of a boyfriend or a husband. Start to formulate a picture of him in your mind. Treat yourself really, really well. Buy yourself flowers once in a while.
If you start treating yourself like the wonderful person you are, eventually other people will, too. And the people who don't (and didn't) will no longer appeal to you.
To your happily ever after,