Strengths

 I like my own qualities about me. When a person gets to know me better and deeper, he or she will likely to sense these.

Acceptance and endurance.

It usually comes from uncomfortable situations and painful feelings you get from people judging or attacking your character.

Some words can be as sharp as blades, that when you hear your close friend speaks that sharp to you, you'll feel hundred times more painful.

And it is likely that you will want to defend yourself by attacking weaknesses you found in his/her personality, but at the same time you know when you do that, it will cost your friendship.

Now you want to weigh out which one you value more on. Do you value your ego than your friendship?

When you let your ego strikes, you're more likely to mention bad details about that close friend that's hurting you at that time. You might have or have not thought the purpose beyond his/her words. What if they are speaking the truth? What if your friend just wants to help you out, and that pointing out your character is the logical way to do so?

Endure it. Hold your breath and count to 3, or ten, or as many as you like.

And give it a thought. Give it an understanding.

Value your friendship, especially if you know how he/she is usually there for you.

This part would be hard because at the time they hurt your feeling, you will highly likely to want to prove them wrong.

It's okay that you hurt at that time.  You hurt in order to grow. You grow to accept yourself for who you are, and that way you have an understanding about others and how to accept them for who they are.

Apart from that, it also helps you challenge your emotional intelligent.