"You can reduce your anxiety somewhat by facing the fact that there isn't a mechanic alive who doesn't louse up a job once in a while." This suggests that mistakes are a common part of any profession, including mechanics, and accepting this can help lessen worry. The key difference is that professional errors are often hidden or absorbed into the overall costs, whereas personal mistakes are directly felt and paid for.

"When you make the mistakes yourself, you at least get the benefit of some education." This emphasizes that personal errors, though sometimes frustrating, provide valuable learning experiences. Recognizing this can help turn mistakes into opportunities for growth rather than sources of stress, ultimately making tasks less intimidating.