Very very true. There's always someone who's better at one thing you do, and probably better at a few other things you don't do. On the flip-side, there are always some things you're better than that person at, and possibly a few other things they don't do at all.
Some people possess a combination of skills that unlocks a door to millions of dollars or a prize or a scholarship. But those of us who don't possess that combination almost certainly possess a different combination that unlocks many other doors, some which we may have discovered already, others which we have yet to discover in the future.
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