As a Christian, I know that you don't have to do a thing. You don't have to do anything, there is only one God to offend, and by your own human nature you are already condemned by Him. All us humans only need to be what comes natural. It's in us already. We are born with it.
It takes a supernatural effort by God in order to counter this, and He has said that He is not willing to change everybody, but only a remnant of the people. It was the same for the Hebrews, and it's the same for the rest of the world, God changes only a few. They are what is referred to as 'The Chosen'.
Most people will not be th chosen. So if you want to get away from God (who you don't believe in as you said), then just be yourself. It's enough.