Did I do it to myself?

For as long as I can remember Joshua has only slept for 30 - 45 minutes at a time, I thought that I would let him cry a little bit before going in and getting him. Today I have decided to let him cry for a good couple of minutes before going in and checking on him. He woke up after 45 minutes as usuall but put himself right back to sleep after a couple of minutes of fussing and he has been sleeping for almost two hours now. So now I wonder have I been the problem all along? I will keep this up for a few more days and post on the progress.

I have gotten so much done I can't even believe it, I hope he has a long afternoon nap too!