Hi FITZ. You really need to work out why you get bored at the two hour mark? What has changed from the first 30 minutes, or how you felt at 75 minutes. Once you know the answer to this question, then you can modify your game..... either by playing shorter tournaments, or removing the thing hat makes you get bored.
Generally, it's a case of planning ahead. If you are about to play a tournament that is going to last for say four hours, make sure you are ready to play for four hours. Don't just set aside time for two hours and then give up (get bored) at two and throw your game away.
Remember. Your focus is one of the most important aspects of playing poker..... if you can't keep it going that long, play shorter tourneys.
Best Wishes
BB