Well I did stitch my finger once (young/stupid)and got to the ER few days later becasue I couldn't bend my finger from swelling from infection setting in. Doc removed all my stitches, cut the wound open, cleaned it up, closed it again and put me on antibiotics. Later on I got a lecture on stupidity. Lecture stayed with me. Now I'm older and know how to stitch and do so in the clinic under supervision of a doc or pa. I would stitch a wound in the field (preferably a clean lanceration )and keeping a clean area is easier than you think with proper supplies of course but surgery would be out of my league. Self stitching is possible (with enough Lidocaine) but that also depends where the wound is. It's a brave action and would be my last resort and only if I had proper supplies. None of that Rambo/Road House stuff.