Nicely written @jhymi.

In this instance I would not be so hard on yourself, because you have the ability of self reflection and self accountability, which is an ever increasingly rare trait in this world.

Being able to reflect like this with a desire to improve what you identify as negative character traits in yourself is a very great quality to have.

It sounds like you and your friend maintain aspects of a healthy friendship with good boundaries since you were able to rekindle things without resentments being held.

When analyzing the self this way, I find it good to examine triggers. If I can identify what triggered me, I can think in ways which offer me a change in perspective and also behavioral and psychological growth for the better.

It could be perhaps that the trigger was that you felt your friend did not believe in you, and this gave way to a memory of when your good advice about her relationship was not heeded. That's a recipe for such a statement to roll off the tongue.

Now that you've reflected on this experience, you will definitely improve with how you handle this type of thing in the future :)