Staying disciplined is vital to investment success because it helps you avoid emotional decision-making during market fluctuations. By sticking to your strategy, you’re more likely to achieve your long-term financial goals despite short-term market volatility. It’s a slow, sometimes frustrating, and emotionally painful process that requires a well-thought-out plan, executed over many years with discipline and patience. Anyone hoping to get rich quick is a gambler and is playing the wrong game. Likewise, anyone unwilling to take on at least some risk is a saver.