Trade is not a must
Every good trader has set his or her requirements that must be met for event to think about making a trade. Sometimes there can be days you see nothing that would justify entering the trade. If that happens, yes, you might have spent 6 hours without a thing to show for it. But that shouldn't matter. If the circumstances for making a trade are not there, they are not there and a trade should not be made.
No topmost or lowermost stocks
Some traders say that you shouldn't trade the topmost and lowermost stocks.
Wait, wait, wait...
If you see a potential trade just waiting for you, but you can't figure out which way it will go, just wait for it. No hurry.
Back to the diary
When we started talking about these tips in another post, I mentioned that you should keep a diary when learning about the markets. However, you should also keep a diary or just a record of all of your real trading activity. It makes it possible valuate your trades afterwards. And learn from it.
Become a pro by learning from the pros
Do what they do. Trade the news, study the fundamental analysis
and last but not least - find a mentor. A day trading professional who has been making real money with it for some time already. See what makes him tick.
Say no to emotions
Emotional trader is usually not a good trader. You need to be calm at all times. Shit happens, so what.
While you might want trade everything and all the time, it's better if you concentrate on a certain set of stocks. Only this way you can keep an eye on them well enough.
I think this suggestion shouldn't require any explanation.