Effective bankroll management in blackjack is essential for sustaining your play and minimizing losses. Start by setting a clear budget that you can afford to lose, ensuring you don’t risk essential funds. Divide your bankroll into smaller session limits, and avoid betting more than 1-2% of your total bankroll on each hand to protect against significant losses. Adjust your bet size based on the game’s progress—bet smaller during losing streaks and increase bets when you're ahead, but always stay within your limits. Knowing when to walk away is key; set both win and loss limits to help you avoid emotional decisions. Monitoring your bankroll throughout the session and avoiding emotional betting will help you play more strategically, keeping you in the game longer while reducing the risk of rapid depletion.