Mother Teresa gave her sisters the following rules to follow in order to practice humility...
Speak as little as possible about yourself;
Keep busy with your own affairs and not those of others;
Avoid curiosity;
Do not interfere in the affairs of others;
Accept small irritations with good humor;
Do not dwell on the faults of others;
Accept censures even if unmerited;
Give in to the will of others;
Accept insults and injuries;
Accept contempt, being forgotten and disregarded;
Be courteous and delicate even when provoked by someone;
Do not seek to be admired and loved;
Do not protect yourself hehind your own dignity;
Give in, in discussions, even when you are right;
Choose always the more difficult task.