Takes me about 2 mins. I wipe off the area, grab the pen sit down and then its over. Takes me longer to get the sharpie container down from the top shelf to dispose of it. When I use a normal needle and not the pen I use my legs and not my belly, just find that easier.
Just dont think about it and get it done. Also if you are apprehensive dont do it while on your feet sit down and do it. Im sure in time this will pass for you, good luck.
Ankylosing Spondylitis sucks.