Feeling like a terrible mom

So, Brayden is an active little boy and I love that about him. However, he is also all boy. Again I love that about him. I just have been feeling like everything with him is a battle. No you can't climb on the back of the couch. No don't do that. Be nice to your sister. I just don't like feeling like everything is NO. And Riley is sick and so I feel like I am giving him even less attention. And Jim is gone and I don't feel like he is getting that daddy time. So, today when the dog threw up in the van on the way home from my parents I think I made the decision. He has to go. Again the dog isn't bad. (yes he doesn't obey) I just don't have the time or patience or extra energy to deal with the dog and training and all that. I love my mornings when it is just the kids and I and then I go oh wait I have to put the dog out. And the dog doesn't cooperate. And I am just not good at ignoring the dog and yet he isn't getting the training or attention he deserves. Yes, he is cute and sweet. But he is also hyper and draining. (at least to me) So, with all the pro/con things done and my heart and mind feeling good about my decision. Why do I feel like it is just one thing on the you are a terrible mom chart?