Is my degree still valuable with a low G.P.A?

I have found out that my G.P.A is just at a pass level but it is below 3.0. I feel really lousy right now and I want to do something to make it better but where I am working and the hours that I am working it seems impossible to repeat classes. I want to pursue a Masters Degree, is my degree still worth it and is anyone out there has a degree with a low G.P.A and still got ahead?