...is not the person who knows everything there is to know.
Knowing things means you have an active mind and a good imagination.
That's nice and all, but the true weight of intelligence is in the DOING.
In a group of people stuck in the freezing rain, the smartest among them is not the one who knows how a nuclear reactor works or the air-speed velocity of an unladen swallow...
The smartest among them is one who can light a match in the rain. After all, it doesn't matter how much you know if you're a frozen husk.
Let me be the first to say, I'm a fool.
Why? Because while I know a hell of a lot, I've done very, very little. When you know a lot, but do nothing with that knowledge, it makes you a fool.
Find someone who DOES things with their knowledge, no matter how little they actually know, and you'll find the smartest man in the room.
God bless!
The best way to succeed is through trial and error. You gain experience but also reinforce self belief. This boosts confidence that you can tackle any obstacle that comes your way through life.