You are always a student, never a master. You have to keep moving forward.
Man must live in contentment with the conditions of his time. He must not make himself the slave of any habit. He must eat a piece of stale bread with the same relish and enjoyment as the most sumptuous dinner. Contentment is real wealth. If one develops within himself the quality of contentment he will become independent. Contentment is the creator of happiness. When one is contented he does not care either for riches or poverty. He lives above the influence of them and is indifferent to them.
My grandmother had six kids - one died as an infant - and she was dirt-poor, and all her kids got an education. And my mom grew up poor. And they both worked so hard and cultivated so much of their own happiness. I wanted to have that like an amulet. Not like armor, but like a magic feather. Like Dumbo's magic feather.
Walking uplifts the spirit. Breathe out the poisons of tension, stress, and worry; breathe in the power of God. Send forth little silent prayers of goodwill toward those you meet. Walk with a sense of being a part of a vast universe. Consider the thousands of miles of earth beneath your feet; think of the limitless expanse of space above your head. Walk in awe, wonder, and humility. Walk at all times of day. In the early morning when the world is just waking up. Late at night under the stars. Along a busy city street at noontime.