When you're short-stacked in a tournament, you need to adjust your strategy by becoming more aggressive and selective. Since you have fewer chips, you can't afford to wait for premium hands or play passively. Focus on picking spots where you can shove all-in with a wide range of hands, particularly when you're in late position or when your opponents are likely to fold. Look for opportunities to steal blinds and antes, and avoid unnecessary risks. Position becomes even more important, as you need to be opportunistic and take advantage of weaker opponents or favorable situations. The key is to maximize the value of your limited stack while avoiding situations where you're forced to make tough decisions for your tournament life without a solid hand.