If you read through the Bible, you'll notice that God will never exalt a proud man. Someone who is haughty and arrogant will not get where they want in life. (Sure, there are exceptions, but without fail their "empires" are destroyed.)
Humility is such a rare gift that God instantly responds to it. Psalm 25:9 says, "He leads the humble in what is right, and the humble He teaches His way." The implication is that proud people can't be led or taught anything. You know this to be true if you've ever worked with an arrogant person. You can talk until the cows come home, but they will never learn anything. The mantra of a proud person is "I know that".
Don't be that person. Humble yourself and you will be lifted up. Luke 14:11 says, "For everyone who exalts himself will be humbled (ranked below others who are honored or rewarded), and he who humbles himself (keeps a modest opinion of himself and behaves accordingly) will be exalted (elevated in rank)." That's a promise.