Someone has said that it is hard to be mad at a person you are praying for! So the best way to deal with negative emotions about another person is to pray for them. Likewise, it is hard to worry when we consider God’s promises. So when we start to worry, the best thing to do is to immerse our mind in Scripture to be reminded of God’s promises to care for us. 

The apostle Peter wrote his two epistles to Christians who were scattered in churches across Asia Minor. First Peter dealt with persecutions from outside the churches; 2 Peter dealt with radical attacks from within the churches. In 2 Peter 1:3-4, Peter prescribes a defense for withstanding both situations: God’s “great and precious promises” that provide “all things that pertain to life and godliness.” The defense against all sources of worry or anxiety is God’s promises found in Scripture.

When worry rises, go to the Word and meditate on it until the promise of peace is met (Isaiah 26:3).

Worry is like a rocking chair; it will give you something to do, but it won’t get you anywhere. 
Anonymous