"When you are caught in the mind, your past defines you. When you are present, you are beyond definition."

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You don't want to block your thoughts, emotions, and so on; nor do you want to chase after them. If you chase after them, if you let them lead you, they begin to define you, and you lose your ability to respond openly and spontaneously in the present moment. On the other hand, if you attempt to block your thoughts, your mind can become quite tight and small.

— Yongey Mingyur Rinpoche