[xMenace]

It's easier with a syringe, but if you are strong enough, you can do it with a pen. Hold the device firmly between your index and middle fingers with the business end pointed down. Use your thumb and ring finger to pinch the skin. While pinching, insert the needle. Once it's in, let go of the skin and re-position your fingers to inject. With a syringe you can maintain control with your fingers, but with a pen you may need to balance it point first while you reposition. Maintain slight pressure while repositioning. Now inject.