" If you focus on changing or cultivating keystone habits, you can cause widespread shifts. However, identifying keystone habits is tricky. To find them, you have to know where to look. Detecting keystone habits means searching out certain characteristics. Keystone habits offer what is known within academic literature as “small wins.” They help other habits to flourish by creating new structures, and they establish cultures where change becomes contagious. But as O’Neill and countless others have found, crossing the gap between understanding those principles and using them requires a bit of ingenuity. "
― Charles Duhigg , The Power of Habit: Why We Do What We Do in Life and Business