It's an old Chinese saying that if you want to change the world, change your government, and if you want to change your government, change your family, and if you want to change your family, change yourself. You can make a step in that direction by meditation.
 
And since moods are contagious and since meditation regularly puts you in a better mood and makes you more calm and relaxed, the people around you will also be in a better mood and be more calm and relaxed, which is good for them like it's good for you. You can help your children and your spouse and your friends and your co-workers be healthier, happier and have better relationships just by relaxing yourself.
 
Everything goes better with meditation. Work. Relationships. Social interaction. Talking with children. Sex. Relaxation is good.