"敵との戦いに勝つための最善の方法は自国の中心で戦うことです"

Simplified Meaning:

Fighting an enemy in the heart of your own country means dealing with problems right where you live. Imagine if there are issues in your neighborhood, like litter everywhere. Instead of just complaining or trying to solve the litter problem somewhere far away, you start picking up trash in your own area. This makes your home cleaner and shows others how to take care of their surroundings too. Another example could be in sports. If your team keeps losing games, the best way to improve is to train hard at your home field. Focus on practicing your skills there, so you’re stronger and ready to win when you play away games. People can apply this idea to their lives by solving problems where they have the most control. Whether it's improving relationships at home or doing well at work, taking action in your immediate environment can lead to bigger successes and influence changes elsewhere.