[xzins]

Yet beloved, I am persuaded that all I can say to you, or to myself, can never keep pride from us. The Lord alone can bolt the door of the heart against pride. Pride is like the flies of Egypt; all Pharaoh's soldiers could not keep them out; and I am sure all the strong resolutions and devout aspirations we may have cannot keep pride out unless the Lord God Almighty sends a strong wind of his Holy Spirit to sweep it away.

[HarleyD]

Pride is like the flies of Egypt

That is an excellent analogy. The problem is if one think they're prideful then they've recognized they have sinned. There is no way to notice pride before it happens. It's only after it has occurred that we've notice that we're prideful. One can only keep repeating to ourselves that there is nothing that we have (our jobs, our families, our homes, etc.) that has not been given to us by God.