Anybody else feel like this sometimes?

I just dont think I know how to relax anymore. Alls I do is work and stay at home with my kids. I have not been out with friends or my hubby in a year and a half. I worked up until i had my daughter and even the day i was induced. Then i returned to work full time 6 DAYS after i had her. I dont even think I can be called anything but a mother anymore...Dont get me wrong I absolutely love and adore my children, but i just feel like i need some sort of relaxation. I work 6 days a week and on my days off i spend it with the kids. All of my money pays the bills and provides clothes and toys for my kids. My hubby thinks I have it easy because he works harder then I do... He just doesnt understand that maybe once a week alls I want is a single hour to myself. Just to relax and maybe tan or go for a walk. He gets time to himself all the time. He works hard, so i understand him. BUT he says that my relaxation is my job because i tend bar and have friends there...He just doesnt understand. Does anyone else feel like they need some relaxation? Any ideas as to how to relax eventho I am taking care of two kids and working 40+ hrs. a week?