Think of it this way: There are two kinds of failure. The first comes from never trying out your ideas because you are afraid, or because you are waiting for the perfect time. This kind of failure you can never learn from, and such timidity will destroy you. The second kind comes from a bold and venturesome spirit. If you fail in this way, the hit that you take to your reputation is greatly outweighed by what you learn. Repeated failure will toughen your spirit and show you with absolute clarity how things must be done.
In our culture we tend to equate thinking and intellectual powers with success and achievement. In many ways, however, it is an emotional quality that separates those who master a field from the many who simply work at a job. Our levels of desire, patience, persistence, and confidence end up playing a much larger role in success than sheer reasoning powers. Feeling motivated and energized, we can overcome almost anything. Feeling bored and restless, our minds shut off and we become increasingly passive.
The human mind is naturally creative, constantly looking to make associations and connections between things and ideas. It wants to explore, to discover new aspects of the world, and to invent. To express this creative force is our greatest desire, and the stifling of it the source of our misery. What kills the creative force is not age or a lack of talent, but our own spirit, our own attitude. We become too comfortable with the knowledge we have gained in our apprenticeships. We grow afraid of entertaining new ideas and the effort that this requires. to think more flexibly entails a risk-we could fail and be ridiculed. We prefer to live with familiar ideas and habits of thinking, but we pay a steep price for this: our minds go dead from the lack of challenge and novelty; we reach a limit in our field and lose control over our fate because we become replaceable.