I'm a Failure

I have put forth a paltry and puny performance pertaining to my push-up program. I started this 6-week program on February 17th. I should be done by now, and able to do my 100 push-ups, but I'm only on week 4 and with each additional day of the program I think it less likely that I will be able to do 100. Keep in mind, I am only doing so-called "girl" push-ups and even then, I have to do some of the days over. I know I'm getting stronger, because I am doing way more than when I started. But even so...why can't I do my 100 now? whine.