Because of the very intimate character of philosophical norms and criticisms, a teacher in philosophy has to be like Alexander the Great: never issuing dictates as to what his soldiers ought to do that he was not ready and willing to leap into doing himself. An excellent teacher is one accomplished in serving as an exemplar, every act of every kind of thinking and every form of perspective must be something he is prepared to illustrate by carrying out himself. Students need to see the incandescent arc-welding that joins ideas together into thoughts. If one is saying something that inflicts suffering, one by all rights had better be prepared to suffer along with the student, to sympathize and assure them that the profit for this agony consists in freedom and clarity.
Sadly the very thing that strikes us as obvious always defeats our thinking about it in more penetrating ways: just as the Romans said that "the good is the enemy of the better," so too "the self-evident is the enemy of the very process of clarification or understanding," not to mention the enemy of the "transcendent or ultimate."
Heaven is in everything: follow the light, hide in the cloudiness and begin in what is. Do this and your understanding will be like not understanding and your wisdom will be like not being wise. By not being wise you will become wise later.
Chuang Tzu (c.360 BC - c. 275 BC)
Source: The Book of Chuang Tzu (Arkana S.), Pages: 223
Clear mind is like the full moon in the sky. Sometimes clouds come and cover it, but the moon is always behind them. Clouds go away, then the moon shines brightly. So don't worry about clear mind: it is always there. When thinking comes, behind it is clear mind. When thinking goes, there is only clear mind. Thinking comes and goes, comes and goes, You must not be attached to the coming or the going.
Thinking can be lateral or "sweaty". For the latter you're better off in an office and following a routine but for the former you have to be "out of your mind", so to speak. So although I recognize the merits of hard work, I find that my work goes stale if I don't go off wandering around the world every few weeks. My friends think I'm a gipsy, but that's when I do "part 1" of my best work.