We have only three choices in life:
1. Change the person, place, situation or thing that is frustrating us.
2. Divest ourselves of the person, place, situation or thing...
3. Change our attitude as it relates to the above situation(s).
Problem is that 1 & 2 seldom if ever work well. Number 3 however, ALWAYS works. The major ingredient in option 3 is forgiveness. Without forgiveness it is virtually impossible to appreciably and effectively change our attitude. Thanks to Andy for reminding us of this.