Many have seen Royce Hall, UCLA's emblematic building that looks somewhat like a castle, either on the UCLA campus or in some old movie(s). When I saw it years ago, I noticed that the two front towers did not look the same, ruining otherwise the perfect symmetry of the building. I asked about that and someone on campus explained to me that the architect deliberately designed it that way as he believed that only God is perfect. That was certainly a humble gesture.
I used to be somewhat a perfectionist. I only felt good when things turned out perfectly. Then the Lord made me see that what I had was a form of sickness and due to the lack of trust in him. Being able to humbly accept all imperfections after I've done my best is actually a form of perfection. That realization opened my eyes and freed my heart. Thanks be to God.