Drink tons of warm water until you're nauseous right before you do it
Don't use your fingers!! The acid will burn your fingers, leave scars, dry your skin and on! I always use a toothbrush. It's MUCH easier, faster, and more effective. Of course, use one different from the one you use to brush your teeth. If you're still having difficulty getting it up, twirl the bristles around the back of your throat.