Chip Stack Envy - Early on in tournaments you may see a player, or more than one player, at your table with a mountain of chips. The feeling can be that you yourself need to start playing some hands quickly so that you can catch up. That isn't the case. Quite often in the early stages of tournaments the biggest stacks belong to players who have been prepared to gamble with marginal hands and then got lucky. There are some wild swings of fortune in the opening rounds and you'll often see those players who do get the early chip lead crashing out while the blinds are still low because they carry on playing marginal hands and eventually come unstuck. Don't be tempted to try and keep up with other players in the opening rounds and just concern yourself with your own game and stay focused.
The Early Gamble - Players will quite often find themselves faced with a key decision early in a game. You may find yourself with a hand such as A-K or J-J and find someone going all-in against you. At that early stage of the game you may have no idea what kind of player you're up against and therefore whether you'll be playing someone who's likely to go all-in with A-3 or A-A. Unless you're already heavily pot-committed, or absolutely certain you're up against a very loose player then these early gambles aren't usually worth it. True, if you win you'll be in a very good position, but if you lose then you're out.
Fatigue and Distraction - With tournaments that often have several hundred or more players in them you can pretty much guarantee you're going to be sat there for at least two-three hours and possibly even more. That's quite a commitment and after a while you may find yourself getting tired or even have your mind wandering away to other things, such as e-mails and your favourite Internet sites. If you don't remain focused at all times then you're going to miss out on a lot of important information and your chances of success are going to suffer accordingly.
Giving Up - It's not uncommon for players to simply get bored of the game they're playing and to start throwing their chips away in stupid situations. This is particularly common once they are in the prize money and is probably the prime reason as to why so many players get eliminated so quickly after the pay-out structure has been reached. You should always allow for just how long it might take you to play a tournament if you do well.
Too many all-in bets - If you find yourself in all-in situations too often then it stands to reason that you're eventually going to get stung. Even A-A will only win about 80% of the time against any two random cards. The way to build up your chip-stack is to out-play your opponents, not to push all of your chips into the middle time and time again.
Tilt - After suffering a bad beat, heavy loss or an unexpected reversal of fortune, too many players then simply push the rest of their chips into the pot on the very next hand. It happens time and time again and rarely seems to have a happy ending. There is a saying in poker that you all need to have a chance of winning a tournament is a "chip and a chair". Even if you've lost a large portion of your chips, whether through bad luck or bad play, you can still come back and get into contention. Don't just throw away your remaining chips on a poor hand or in a fit of temper. Multi-Table Tournaments are a very demanding form of poker but they offer some of the greatest rewards. Stay focused and play your best game throughout if you want to be a success in this ultimate test of poker endurance.