potty training woes

i am trying to potty train michael. some days it goes really well, and some days not so much. 

case in point...yesterday, he stayed dry all day and let me know when he needed to go (it might have helped that we spent a good portion of the day away from home). today, he didnt make it to the bathroom once. 

i get really frustrated with the bad days. sometimes to the point that im ready to quit and just go back to diapers...