Johann Gerhard is considered one of the greatest Lutheran theologian of the 16th and 17th century. He wrote the following on how we might fortify our mind against pride.

The mind should be fortified against pride by meditating on:
(1) The humility of Christ, who for our sakes humbled Himself to death on the cross. Augustine (Sermon 39 de verb. Dom.): “Deign to be humbled for God, for God designed to be humbled for you.”
(2) Our unworthiness. We are dust and ash. Death will humble us whether we like it or not, making us food for the vermin.
(3) Our need. The greatest thing we know is the least of the things we do not. Whatever we have comes down to us from the hand of God. Thus the treasure belongs to Another.
(4) Our fragility. In testing we can easily succumb if God’s grace does not preserve us. But now, “God resists the proud but gives grace to the humble” (1 Pet. 5:5).
(5) The superiority of others. One must recognize the gifts of God in others, lest we insult the Giver Himself. It does you no harm to subject yourself to all others. It hurts a lot if you put yourself before even one person.

Method of Theology Study, Appendix, Concordia Publishing House, 2017, pg 241