Start with a clean grill. Keep it clean by brushing with a wire brush after preheating and again after cooking. Make sure to oil your grates and your food before putting it on the grill to keep it from sticking.
There is no absurdity so palpable but that it may be firmly planted in the human head if you only begin to inculcate it before the age of five by constantly repeating it with an air of great solemnity.