Read Philippians 4:8

Let me urge you to take charge of your mind and emotions today. 

Let your mind feast on nutritious food for a change. Refuse to grumble and criticize! Let your life yield a sweet, winsome melody that this old world needs so desperately. 

Fix your attention on these six specifics in life:

Not unreal far-fetched dreams, but things that are true...
Not cheap, flippant, superficial stuff, but things that are honourable...
Not things that are wrong and unjust...but that which is right.
Not thoughts that are carnal, smutty, and obscene, but that which is pure...
Not things that prompt arguments and defence in others, but those that are agreeable...
Not slander, gossip, and put-downs, but information of good report, the kind that builds up and causes grace to flow.

Excerpted from Charles R. Swindoll, Wisdom for the Way (Nashville: J. Countryman, a division of Thomas Nelson, Inc., 2001). Copyright © 2001 by Charles R. Swindoll, Inc. All rights reserved. Used by permission.