Feeling tired

I feel tired today. I have a lot of things to do. Sometimes I wonder how I am going to get things done in a day. Being a full-time mom is not easy though it's fun. I love being a mom, but sometimes it's very overwhelming. I must admit that I feel guilty when I let my little guy just watch tv sometimes because I am busy doing something important. What can I do? It's just me and my little guy every day. I don't have any help. I think I really have to organize my schedule so my day is not so messed up.