Teach and Discipline Yourself First
Imam Ali (A.S) has said: One who proclaims himself to lead others should start by teaching himself before he teaches others. He should teach through his character before using his tongue to teach. One who is able to teach and discipline oneself is more worthy of esteem then one who teaches and disciplines others. (Nahj al-Balaghah
: Sayinq 73)
Source: imamreza.net
Other links:
What is the most factor of planning?
Sleeping too much at night
One Half of Wisdom
The gravest sins