Feeling guilty for resting

I always feel very guilty for resting or taking time to myself. I am sick right now with a cold and I feel really guilty that I’ve been sitting on the couch for the past three hours watching tv. Like, there are so many other things I could and should be doing. But I feel really sick and can’t make myself get up. I equate my worth to my productiveness. Does anyone else feel this way? I think it stems from watching my mother literally never take a break. She was constantly at work when we were kids, sick or not. She even went in to work with a shattered arm from slipping on ice. I never felt like I could rest or relax as a child and now I’m still like this at 32. I have to constantly be doing something or I feel bad about myself.