When the market opens I scan the stocks I filtered for that day's trade and once again choose 2 or 3 stocks. And then I enter trade. I wont feel bad when the stocks I didnt choose that day give good movement. To plan for day trade and executing is my responsibilty as a trader and the outcome is not in my control and I remember it always.
Sometimes good trading set up form during the trading hours. We can identify it by observing the price action carefully. That time we have to plan entry,exit and target in few minutes and execute the trade. We cant watch all nifty 50 stocks and we cant trade in all nifty 50 stocks at same time.