Can I just have a new life? VENT.

Does anyone else feel absolutely drained and really irritated? I work 50hr-55hr weeks and I'm a nanny. I don't make enough to live on my own (though I should with that many hours a week) and I loath living with my parents in my mid 20's. I hate being a nanny. I love the kids, don't get me wrong, but most everyday I feel that screaming in the carpet seems more productive. The family I'm a nanny for is in a bad spot (bad divorce and cps was called). My whole life I've been taking care of kids and I've always hated it. I keep falling back into it with the same family. What was supposed to only be 6 months has turned into nearly 5 years. I try to be cheery about it but everyday I fight for motivation to get out of bed. My boyfriend does his best to cheer me up but I just feel so defeated everyday. I wish I would have never agreed to help those 5 years ago..