Go the F*** to SLEEP!!!!!

Why for the love of God does my baby girl not sleep!!!!!!!!!!!!! I'm at my wits end she will be 7 months on the 2nd and she still only will sleep tops 3 hours at a time!!! I want to shoot myslef!! My husband is no help either!!! He just sleeps through the night and he complains about being tired! Why!!!!!!!!! Sorry I just needed to vent... I have no one to talk to about this that understands!!! Anyone else dealing with a no sleep baby still!!!!!!! Pic, cause I love her more than anything even tho I'm beyond sleep deprived!!!