missing out/not enough

When does this guilt stop? When do I stop feeling like I could have should have done just about everything a little bit better than I did. I should be devoting more time and energy to my baby boy! He is growing and changing soo fast. I should be devoting more time and energy to my husband - the poor guy is amazing and works his butt off - he deserves some attention and appreciation. I should be devoting more time and energy to my class. They deserve a teacher who isn't struggling to stay awake in the afternoon counting the minutes until she get to go home and be with her baby. I should be devoting more time and attention to myself. I can't remember the last time I wasn't doing three things at once with a to-do list a mile long trailing behind me. Even when J takes on some of the burden, I still have an unending list of things only I can do (i.e. breastfeeding...lesson plans...organizing...cooking anything that doesn't have directions). I should be devoting more time and energy to myself. A girl should get to shower more than once every three days. A girl should get to put on makeup and actually do her hair more than twice a month. Errr! Why can't the day just be a few hours longer?!