Congrats! Now that you're debt free, use some of that car payment you've been paying for 5 years to build an emergency fund, then you can start investing and working towards buying a house.
When i payed off my final debt, i was temped to view the lack of bills as "extra money," and at first i did. But after a few weeks i thought, "i've been living the last X years of my life without that "extra money" why do i need it now?" after that i continued to make the same "payment" every month into a savings account. Once i had about 8 months worth of expenses in that emergency fund i stopped paying into it, but continued making that monthly "payment" into mutual funds, retirement, a college fund for children should i ever have any, gold, etc...
The only time i increase spending is when my income goes up, and when that happens, i increase my "payment" into various savings/investments. If you do this remember to adjust your emergency fund as your income and your expenses increase. 8 months of expenses 6 years ago might not last 3 months now....