ICM (Independent Chip Model) helps in tournament poker by allowing you to evaluate the value of your stack relative to the remaining players' stacks and the prize pool. By using ICM, you can make more informed decisions about whether to take risks or play conservatively based on how much your current chip count contributes to your expected payout. For example, when nearing the bubble or in a final table situation, ICM emphasizes the importance of survival over chip accumulation, making marginal hands and bluffs less attractive. It helps you avoid making costly mistakes that could jeopardize your position in the tournament, especially when your stack size is either large enough to pressure others or small enough that a single mistake could lead to elimination.