You've got to have models in your head. And you've got to array your experience — both vicarious and direct — on this latticework of models.
You must know the big ideas in the big disciplines and use them routinely — all of them, not just a few.
I constantly see people rise in life who are not the smartest, sometimes not even the most diligent, but they are learning machines. They go to bed every night a little wiser than they were when they got up and boy does that help, particularly when you have a long run ahead of you.
So remember this principle when something threatens to cause you pain: the thing itself was no misfortune at all; to endure it and prevail is great good fortune.
Everything that happens is either endurable or not. If it's endurable, then endure it. Stop complaining. If it's unendurable . . . then stop complaining. Your destruction will mean its end as well.
To every thing there is a season, and a time to every purpose under the heaven: A time to be born, and a time to die; a time to plant, and a time to pluck up that which is planted; A time to kill, and a time to heal; a time to break down, and a time to build up; A time to weep, and a time to laugh; a time to mourn, and a time to dance.