One thing that I do, Susie, to tell the difference is to leave a bit of the tail from casting on, if that's on my right, then I'm doing the right side, if it's on my left, then I'm doing the wrong side. though I've found that it only works using straight needles, have yet to find out what happens with circ's. Hope this helps.
Wisdom is knowing what to do. Skill is how to do it. Virtue is getting it done.
That which does not kill you, isn't trying hard enough.