Ego

Check your intention.
Ali ibn Abu Talib, a companion of the Prophet who was about to slay his opponent in the midst of battle. As he raised his sword to strike, his enemy spat on his face. Ali immediately dropped his sword and refused to kill his opponent, “What is wrong with you, why do you not strike ?” the man asked “Because before you spat at me I was fighting you for the sake of Allah Almighty” Ali replied, “but after you spat I was fighting you because I was angry - and as a Muslim I can only fight for Allah , never for my own self.” Upon hearing this, Ali’s opponent recognized the nobility and truth of his words and immediately accepted Islam. [I have no idea about it's authenticity]

Again, check your intention.
Never do I argue with a man with a desire to hear him say what is wrong, or to expose him and win victory over him. Whenever I face an opponent in debate I silently pray - "O Allah, help him so that truth may flow from his heart and on his tongue, and so that if truth is on my side, he may follow me; and if truth be on his side, I may follow him."(Imam Al-Shafi'e)

Make people understand, but do not oppose them unnecessarily.
Show people as much love as you can. Greet everyone, even the very lowly. If you gather with others in an assembly and discuss various problems, during which someone expresses an idea to which you are opposed, do not oppose them. If they ask you, give your opinion, speak what is in your heart, and say that there are such and such opinions on this subject and the proof is as follows. Thus, they will listen to you and understand the degree of your knowledge.
(Imam Abu Hanifah)

Show no boredom and weariness to anyone.
Show some degree of knowledge to all who approach you and let each one learn something from you. Give them important things, not trivial ones. Be like a friend to them, even make witty remarks by way of jokes, because friendship and sincerity ensures the continuation of knowledge. Treat them gently and be tolerant. Show no boredom or weariness to anyone. Comfort yourself as like one of them.
(Imam Abu Hanifah)

Take interest in those who do not come to you.
Whenever you hear of any strife or corruption, hasten to resolve it. Visit those who visit you and those who do not. Always do good, whether others wish you good or ill. Forgive and turn a blind eye to some things. Abandon those things that distress you and try to do what is right. Visit those of your companions who fall ill, and ask after those you do not see. Take an interest in those who do not come to you.
(Imam Abu Hanifah)