Huios,
From my current experience it is very hard to be purely discretionary when trading ES or NQ, unless you are just scalping for very quick in and out trades.
But for daytrades(or multiday) trades that last longer than 5minutes, the only success I have is when using a semi-systematic approach. Not pure mechanical because I can use discretion on if I want to take the trade and discretion while in the trade. But, the computer(Tradestation for me), gives the signals, stops, etc. This doesn't mean I can't use my discretion on exits and stops if market action dictates. The most important thing is this keeps you on the right side of the market, even if you aren't in these trades.
You really need an underlying System/Strategy/Rules that are underneath because the psychological aspects plus the enormous amout of information available will get in your way.
So, I recommend a hybrid of discretionary with underlying rules that give you specific prices for entries, exits and stops.
From my current experience it is very hard to be purely discretionary when trading ES or NQ, unless you are just scalping for very quick in and out trades.
But for daytrades(or multiday) trades that last longer than 5minutes, the only success I have is when using a semi-systematic approach. Not pure mechanical because I can use discretion on if I want to take the trade and discretion while in the trade. But, the computer(Tradestation for me), gives the signals, stops, etc. This doesn't mean I can't use my discretion on exits and stops if market action dictates. The most important thing is this keeps you on the right side of the market, even if you aren't in these trades.
You really need an underlying System/Strategy/Rules that are underneath because the psychological aspects plus the enormous amout of information available will get in your way.
So, I recommend a hybrid of discretionary with underlying rules that give you specific prices for entries, exits and stops.

