Am I ever angry or frustrated? I only feel angry sometimes when I see waste, when things that we waste are what people need, things that would save t… - Mother Teresa

It is our emptiness and lowliness that God needs and not our plenitude. These are a few of the ways we can practice humility:
Speak as little as possible of oneself.
Mind one's own business.
Avoid curiosity.
Do not want to manage other people's affairs.
Accept contradiction and correction cheerfully.
Pass over the mistakes of others.
Accept blame when innocent.
Yield to the will of others.
Accept insults and injuries.
Accept being slighted, forgotten, and disliked.
Be kind and gentle even under provocation.
Do not seek to be specially loved and admired.
Never stand on one's dignity.
Yield in discussion even when one is right.
Choose always the hardest.

I was once asked why I don't participate in anti-war demonstrations. I said that I will never do that, but as soon as you have a pro-peace rally, I'll be there.

I ask Him to make a saint of me, yet I must leave to Him the choice of that saintliness itself and still more the choice of the means that lead to it.