Heatbreaking Seperation

I have tried and tried with my husband to get him to understand how I feel and nothing works! Was I not clear enough? Am I doing something wrong? We are separated and I’m a SAHM with our 2 kids. I know leaving the marriage means starting over and that’s terrifying… but I am so stressed over this man it’s become so unhealthy, I literally cry and get depressed over him. I get distracted with my mother duties dealing him and it’s so hard cause the kids miss daddy they want us together but he’s driving me insane.