This has been a problem for me since a very young age. Even when I'm not manic, I'm very impulsive when I have cash on hand. It's like it burns a hole in my pocket. I've stopped using any sorts of credit cards, and want really because my credit is horrible now due to some past debts, but I also have a person that basically handles my money for me now. Somebody I trust basically takes most of my paychecks each week and sets that money aside for bills, taxes, savings, etc. I keep what I need for the week. It feels silly at times, like I'm a child with an allowance, but it has helped immensely. I'm finally paying off debts and even just bought a home because of it. I would definitely suggest trying something like this if you have a person you can trust.