I just wanted to post my encouragement as well. We have done modified cc and like everyone else here has said, its not fun, but we noticed a HUGE difference to DS when we did it. Once we got through the first few hard nights, he slept so much better and was happier and seemed to also develop more quickly. We were astonished at the change in his attitude, and ours- everyone was so, so, so much happier for sleeping better.

Bear in mind that there are many ways to do CC, and you will work out what is right for you. No-one likes to hear their baby cry, its heartbreaking. I always had a cut off point with cc, where I really felt DS was getting himself into a state, I would go in and pick him up and rock to calm him down. I figured that if he got to that point and then eventually went to sleep, he wasn't learning to settle himself- he was just falling asleep out of pure exhaustion, which wasn't doing much for anyone.

Best of luck on your journey.