I will generally take the day off if I'm up substantially and/or the day already made a major move, but I will usually not if I'm up just a few points. This is also because I'm trying to limit my trading hours. If I'm red, I'll keep going as long as I believe the day have enough profit potential left that I can still profit enough that it makes a difference. I know some recommend a strict daily loss limit, but I can tell you that many of my moderate winning days and even larger winning days at some point where as much as 1-2.0K in the red. If I stopped trading those days I imagine my overall results would have been worse.
Just look at that. It stopped me out exactly to the TICK and reversed hard! Seriously, you can't make this crap up.
and out 69.96, /cl is a strange bird as I have been warned here before. reckon I'll limp back on home.