words of encouragement

I'm sitting here trying to get my 13 month old to sleep in her crib. she hasn't slept in it since she was 4 weeks old. for some reason she only will sleep while sitting up. in a swing or a stroller or carseat ect... someone please tell me WHY IS THIS SO HARD???? my other 2 never had a problem. this is killing me... literally. she still wakes up at least 3 times a night.. I can't get her weaned from the boob and I can't for the life of me get her in the crib. I don't know what I want from posting this... I just need to vent as my husband doesn't understand cuz he is gone working most of the time. I just need a successful story to make me think positive