Once is not enough. Make the mental paths deep by walking through the weeds many times.
This quote is often misattributed to Henry D. Thoreau. But it’s actually by Wilfred Arlan Peterson in his ‘The Art of Living, Day by Day: Three Hundred and Sixty-five Thoughts, Ideas, Ideals, Experiences, Adventures, Inspirations, to Enrich Your Life’ (New York: Simon and Schuster, 1972) p. 77.