There are two reasons why you should never compare your shape, ministry, or the results of your ministry with anyone else.
First, you will always be able to find someone who seems to be doing a better job than you and you will become discouraged. Or, you will always be able to find someone who doesn’t seem as effective as you and you will get full of pride.
Either attitude will take you out of service and rob you of your job.
Paul said it is foolish to compare ourselves with others. He said, “We do not dare to classify or compare ourselves with some who commend themselves. When they measure themselves by themselves and compare themselves with themselves, they are not wise.” (2 Corinthians 10:12 NIV)
Paul often had to deal with critics who misunderstood and maligned his service. His response was always the same: Avoid comparisons, resist exaggerations, and seek only God’s commendation.
One of the reasons Paul was used so greatly by God was that he refused to be distracted by criticism or by comparing his ministry with others or by being drawn into fruitless debates about his ministry. John Bunyan, the author of “Pilgrims Progress,” said, “If my life is fruitless, it doesn’t matter who praises me, and if my life is fruitful, it doesn’t matter who criticizes me.”
—from Rick Warren Daily Devotional