I have not tried the pen. I have heard that it is quite painfull and read some things about just using the syringes.. Thats the route I took.. I also prefer it in the stomach, Like jorgensen said, Just grab a fold and insert at a 45 degree angle, let go of skin when needle is in and inject.. but the pharm/doc probably already went over that..
Otherwise close your eyes and have a friend/family member do it!!