Now, trading the way we do, if we got killed in the morning, it was probably because the market was flat or very choppy, if this was the case, they usually reversed in the afternoon and trended nicely and vice versa. That's why sometimes we make our comebacks in the afternoons.
In this case, would it not be better to not trade mornings at all, wait for a flat/choppy morning, which would then increase your probability of a trending afternoon. Go in the afternoon with more size and you'll make a killing.
Well, nothing works 100% of the time, if you have found something that works 100% the time, please kindly share. The point is if you get into a losing streak, you want to make the damage as minimal as possible, yeah, your method is still valid, but psychologically, it is a lot harder to trade and make the kinda of profit you used to when you are in a losing streak. If you don't believe this, than you are either very good at controlling your emotions or you are lying to yourself.
I don't have anything that wins 100% so don't get me wrong. I'm not trying to be antagonistic just trying to help analyze your thought process to separate truth from dogma.
For me, I try my very best to trade the same methodology regardless of winning streak or losing streak. If I made $500 in the morning, maybe by quitting I preserve a win, but maybe by trading in the afternoon I end up with a $1000 win. If your methodology has a positive expectancy, than it is much more likely that you will turn a $500 morning into a $1000 win than a break-even day.
Perhaps Hitman said it best when we was telling everyone to know exactly what their average $/day is. At all times, Hitman knows exactly what his $/day is. It's not a range, it's an exact number. If there were more trading days in the year, his net win would be greater.
Why not take that one step further and figure out what your average $/trade is? In that case the more trades you make per day the greater your net will be. Of course you should only take trades that fall within your normal trading methodology and not trade just to generate volume.
What I'm getting at is that too many traders do not recognize that each trade has its own probability, and that the nature of probability is that you are going to have adverse runs and favorable runs. Just accept that you have a positive expectation per trade, and get in there and trade! The only time you should stop trading is when you cannot trade your method consistently. If a losing streak will cause you to not trade your method the same as if you are on a winning streak, then definitely take time off. But if you can trade the same methodology, then it doesn't matter whether you are on a losing streak or not, each trade has it's own individual positive or negative expectation.