I'm so sorry to hear that, Diane. Sometimes there is no spell, and the pain in life just has to be lived through. If you've truly tried everything, I don't suppose that any shamanic soul retrieval would have any effect? Or maybe it does, but it just takes time and effort that, if you're heartbroken, you don't always have the energy for.
need more information sadly in order to help you, but i know what its like to be down and struggle to get back up. meditation can help you find yourself, sometimes a lack of vitamin D can make a person depressed/sad, but if its more serious, like you are sad more often than happy, and you don't have a reason [like grieving] you might consider talking to a counsellor to help. or if you can't for whatever reason, try to find some books at the library to help. there's some websites that could lift your spirits, as well as listening to music that makes you want to dance.