How do you make an injection hurt less?

Unfortunatley some injections do hurt but most of them don't. Sometimes people get themselves so worked up about injections when there is no need. All you have to do is the following

don't look at the needle

think of someting that makes you happy

stare at a spot on the wall

relax - it will be over in a couple of seconds and you will realise that you barely felt a thing