V.W.
We spend about 15% of take home pay on groceries (including school supplies, dog food, laundry soap, etc).
We put about 10% of take home pay into investments, but also have an additional 5% of gross that goes into TSP, plus the agency match, and a payment into an employee retirement account.
We just added our 2nd child to the karate program our older child has been in for years, and so we are paying about $250/month for karate lessons for two and piano lessons for one. They don't have any other clubs or expenses really. That may change one day soon, though, as one is in middle school these days.
Dave Ramsey has a LOT of great advice. Much of it we already tried to adhere to even before we took the class. Very wise about a lot of things and a great way to jump start getting out of debt and saving for the future, which both contribute to keeping "Murphy" away....