"مقاومتی که در سالن ورزشی با آن مبارزه می‌کنید و مقاومتی که در زندگی با آن مواجه می‌شوید تنها می‌تواند شخصیتی قوی بسازد."

Simplified Meaning:

When you work hard to lift weights at the gym, your muscles become stronger because you are training them against resistance. In the same way, when you face difficult challenges or problems in life, dealing with them can make you a stronger person. For example, think about a student who struggles with a tough subject in school. At first, they might find it really hard and frustrating. But if they keep studying and practicing, they not only get better at that subject but also learn how to handle other tough situations in the future. This builds their patience, persistence, and confidence. Just as exercise strengthens your body, overcoming life's difficulties strengthens your character. Even if something is hard to face at the moment, it helps you grow and become more resilient. So, don't shy away from challenges; they are opportunities to build a stronger, better version of yourself.