The LAR version is different. There are many methods to do the injections. I do them in the stomach when I am out and about and for pictures. At home I use my buttocks or the inside of my thighs. I don't have enough fat to do them anywhere else.
Several hints follow.
Also rotate sites so that you leave as much time as possible between injections. If it hurts, you may be on top of a nerve ending. Move the needle over about an eighth of an inch and touch again. This part of the technique is why self injected shots hurt less. Someone else giving you a shot cannot tell if they are on a nerve - only you can do that.