Apostle Peter is a great example of how presumption can affect us. Though Peter was the rock on which Christ would build His church, his presumption caused him to deny Christ three times. Once Peter as restored, he was in a place which Christ would use him for His glory. We think too much on what we can do and too little of what Christ can do through us. 

Cornelius was a devout man, a praying man and a worshipper of God. His faith "had hands" because he gave generously to people. He was not just focus on his family. This should be the testimony of every believer. The sincerity of one's heart will catch God's eye. 

Are you living up to your confession of Christ being the head of your life? Does your lifestyle and speech support your confession? If not, no worries, just repent of your sins and ask the Lord to order your steps. Then, start reading the Word on a regular basis and ask the Lord to show you the areas which need to be fixed.