1. Get into a
routine. Make sure you are very familiar
with all of the tells mentioned within poker
advice, and think about how you look to
other players. Try to do the same thing
every time you bet. In advance think about
the physical actions that you go through
when you bet or check. Do your best to keep
your behavior uniform.
2. Be prepared. Often your opponent will actually ask you what your hand is or what your hole cards are. My reply is always the same, and said with a smile: "I don't remember." You can also deflect the question with one of your own: "What do you think I have."
3. Use time to your advantage. When you get your cards wait until it's your turn to look at them. When the flop comes, spend that time watching other players watch the flop, especially if there was a pre-flop raiser.
4. Watch your table talk. Do not talk about the hands you've played, the hands you've folded, or why you did or didn't play a hand a certain way. Don't show your hands if you're not called.
Back in 1985, when my son Neil was six years old, he and I were playing head-up no-limit hold'em at the kitchen table. During one hand he made a pot-sized bet, and I folded. After I threw my cards in the muck I asked him, "what do you have?" He had a stack of chips in front of him that was so high that I could barely see him sitting behind them. He raised himself up so that I could see his eyes peering out from behind the stack, shook his head from side to side and said, "Oh, no. You got to pay to see 'em."