E.D.
Hi,
I have a 2 1/2 year old who also had sleep issues pretty much from birth on. We tried the crying-it-out, but I guess were not strong enough to put up with it. If you can go through with it - go for it! I just was not able to hear my baby cry and cry and sob and sob (he was also very stubborn and never cried himself to sleep...). Pretty much exactly around his 2nd birthday he suddenly decided that he is a big boy now and pretty much told us to leave the room after his goodnight story and song and then fell asleep by himself and stayed asleep for the whole night. So there is hope!
I guess eventually they all come around!
I hope the best for you and I understand very well how you are feeling!
E.