I knit all my socks on two #0 circular needles, and that works great! But, for beginning sock knitters, I've always had a schedule, per se:
-Start out confidently, with wool and needles in hand.
-Knit happily and competently to heel, greet heel with apprehensive thoughts.
-Knit the heel flap, and commence turning.
-End up throwing knitting across the room, and say bad words.
-Pick it up again in an hour after a nice cup of tea/coffee/stiff drink, or whatever you like.
That's how I started out, but don't worry, it goes away, and you eventually become addicted to socks.