buy (if you don't own) a fine (size 1 or 2, or maybe even a size 0 circ. (40 inches long is a good size)
use the circ tip--and weave it into each stitch. (over 1 thread, under 1 thread)
use good light, and do it when you are not too tired.
chances are you didn't knit on size 1 or 0 --but on a larger needle
the size 1 is not much bigger than a tapestry needle, and once you've picked up the stitches and frogged, you can knit off the size 1 needle. (stitch size is governed by the size of the needle you knit ON to, (not off of) )
(a size 1/40 inch circ is also useful for magic loop socks or other stuff, (and should you decide at some point you don't need or want it, its an easy item to swap/sell..)