tip about sleep(less) shock!

"...biggest shock for me was the sleeplessness and early 5 am wake up calls. I knew about the frequent wake ups in the first 3 month but did not know it would last even till now, 18 months old, even with trying cry it out, it does not work. He periodically sleeps 2-3 weeks through the night, but than has weeks of waking up...i think teething. So I wish someone had told me to expect not to have a child who sleeps through the night. Everyone always asks, how does he sleep? Is he sleeping through the night? I have tried everything the books say and he doesn't. I thought it was me or I did something wrong, but now I think it is all temperment . Most people whose kids sleep did nothing to make it happen. So I wish someone would have told me it's okay if they don't sleep though, it's tough, but there is nothing wrong, it's normal, it's okay and you're okay!"