"Thousands of people each year hit such a level of frustration in their lives that they commit suicide. But that doesn't mean everybody else is happy. Thoreau wrote, "The mass of men lead lives of quiet desperation." I think one of the greatest sources of frustration is for us to try to control things that really are God's business.
The Bible says in James chapter 4, "You do not even know what will happen tomorrow... Instead you should say, If it is the Lord's will, we will live and do this or that." Find the sweet serenity of just letting God be God, and rejoice to find the little gifts he's given you along the way."