200
In "Oh, The Places You'll Go" the following passage:
You'll get mixed up, of course, as you already know,
You'll get mixed up with many strange birds as you go.
So be sure when you step,
Step with care and great tact.
And remember that life's a great balancing act.
teaches us this lesson.
What is "Life can be messy, you'll make mistakes, learn from them."