27 Can any one of you by worrying add a single hour to your life[a]? (Matthew 6:27 NIV)
34 Therefore do not worry about tomorrow, for tomorrow will worry about itself. Each day has enough trouble of its own. (Matthew 6:34 NIV)
These two scriptures on worry sum its value quite well. When we allow worry to rob us of our peace, we are not adding anything at all to our lives.
This may be of little comfort at time of great trouble or turmoil in our lives. But we can call on God for comfort, guidance and assurance.