Attempting to Potty Train :-{

So my son will be 3 years old in October and we have decided to attempt the potty training task. Today is day 3 and I am wondering if I am really ready to do this. AJ can't decide if this is something he wants to do or not. Sometimes he is all for it and other times he asks to just have a diaper. He does well actually going to the bathroom in the toilet, it's just convincing him that he needs to stop playing and go sit on the potty that is the current issue. Perserverance is the key I guess.