Perseverance

After you skillfully say "No" about 50 times to 30 different people, you become a master of saying 'No'. It comes without mental effort on your part and it happens fast, naturally, easily, and graciously. You arrive at stage # 4, Unconscious Competence! (You don't know what you know).

• Not Setting Realistic Expectations. If you don’t have a concrete understanding of what you want your system to do, it’s likely you’ll be overwhelmed by applications that you don’t need.
• Not Considering Complexity. Accounting for the complexity of the...

Learning leads to knowledge. Studying a topic means you are invested in it.

The world already has tons of knowledge. You don't need to learn more. What you need is to study, to practice, and to take action on the knowledge you have.