I gave myself the flu jab yesterday. Qualified for sure, but still 'interesting' to do it on yourself! !
I have a technique inserting needles. I do it very slowly. The total 'pain dose' is the same. a quick insertion or a slow one, and I prefer to space out the sensation!
The worst is when I penetrate the muscle surface. Takes a little extra effort.
A Soviet researcher did that OP on himself in their Antarctica research station I believe?
To be frank, the difficulty is in seeing what you do. Some fancy mirror set up there!
You numb in layers.
Inject anesthetic about 1 cm deep around planned incision, then cut until you start feeling it. Inject again, cut. Inject, cut.
It is a wartime surgery technique. Batallion/regimental level treatment.
Of course, Forest Fella would not do the anesthetic. HeMan!