Like what was stated above, too much money can be problematic. The psychology behind the problem is now that you're trying to buy happiness and spending a lot more on impulse purchases and not appreciating what you buy. That need for instant gratification becomes an addiction which is satisfied though purchases.
First, make sure your 401K/retirements are fully funded.
Next, are all your debts paid off? (Mortgage, cars, etc...)
Do you have at least 6 months salary in savings for emergencies?
Do you have college funds for your kids? Start saving even if you don't have kids.
Create a budget of all your necessary expenditures (utilities, groceries, living expenses).
What ever is left of your take home salary is disposable. Now, keep 40% of it for fun money broken up into budgets (knife, guns, sailing, hiking, etc) and stick to it.
Place the remaining 60% in a hard to access account. I direct deposit into an account that does auto bill pay and transfers a percentage into my spending account and what's remaining is difficult to access due to red tape at the bank. It keeps me from wasting it.