repossessing my house in GA

[Sean Merant]

If anyone can help I would appreciate your input.
I personally sold a home to a young couple with kids who I thought just had a bad run of luck; little did I know I would be victim to them refusing to pay the mortgage I gave them. I used a lawyer for all the paperwork. This has put me in a small financial strain now as they have not paid the mortgage in DEC or JAN.
I have asked them politely what position they are in now and basically they tell me the husband lost his job and they will not be paying their mortgage, they are going to try and stay in the house as long as they can.

So far I have given them two late notice payments with late fees I know want to get them out of the house and repossess it so I can just rent it out myself.what legally do i have to do to get them out as quick as possible. The house is owned outright by my wife and me.

This is in Georgia Houston County.