My 9 month old wakes up and can't settle himself back to sleep!?

This is driving the both of us crazy. My other two weren't not such light sleepers. He was in the room with us for a while and would wake up if we even tip-toed by his bed. He's never been a great sleeper but now it's obvious that he can't settle when he goes into a lighter sleep cycle. He wakes up early from naps, wakes up about 2 hours after going to bed at night and every few hours thereafter. I find that if I try to give him his pacifier he just gets angrier and more upset that I'm even there and not picking him up. He seems to cry less if I don't get involved -but it's still too much crying as far as I'm concerned. I'm afraid this is my fault because he spent much more time in our bed then my other two. I just did it to survive, to get some sleep because I was the mother of two other children. It was easier to nurse him and sleep that way. It worked great. I wasn't near as tired but now it's biting me in the rear. What do I do? Will he ever get out of it?