Butterfly, I came to that conclusion about 30 years ago when I was waiting to sit for a university maths exam - I was a mature age student and I was anxious to do well. As I sat in my car in a deserted car park - I was very early - I saw two rabbits hop out from under the bushes for a few seconds, then they disappeared again.
My anxiety immediately disappeared and I took their presence as a smile from God, assuring me that whether I passed the exam or failed it, all would be well and the earth would continue to spin on its axis because the fate of the world is not my responsibility. All I have to do is my best, the rest is up to the Almighty.
As I walked to the exam room I passed a tree and heard the morning chorus of bird song and I smiled, thinking that God was repeating himself but I got the message the first time.
I passed but I cannot remember the grade. It doesn't really matter now, does it?