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It’s ridiculous to judge how good you are at something without taking into consideration the amount of practice you have doing it.
Understanding knowledge. That mean this: Try to internalize knowledge and think about how you can use that knowledge to improve your life, career, work, relationships, etc.
Thinking about how you can solve problems. A problem is just an unanswered question. Put your brain to use and think about how you can solve problems. There are a lot of those on this earth.