Most of the time the people who bluff and end up wining know exactly how to carry themselves, the game is about trying to deceive and confuse your opponents so that they may think wrongly about your motives.
Bluffing is the key of winning in poker games. If you are a good and experienced bluffer you will definitely win the game. Make sure that your opponent is not good bluffer than you, otherwise he can give you tough time in the game and my win all your money. Always play with less experienced bluffer in poker games, so that You will always be in profit.