The More You Think About Your Own Self, The More Self-centred You Are, The More Trouble Even Small Problems Can Create In Your Mind. The Stronger Your Sense Of 'i', The Narrower The Scope Of Your Thinking Becomes; Then Even Small Obstacles Become Unbearable. On The Other Hand, If You Concern Yourself Mainly With Others, The Broader Your Thinking Becomes, And Life's Inevitable Difficulties Disturb You Less.