Hitting Your Head Quotes by Chris Darwin, John Heywood, Shannon Wheeler, Steve Jobs, Dwight D. Eisenhower, Linus Torvalds and many others.

Life is brought down to the basics: if you are warm, regular, healthy, not thirsty or hungry, then you are not on a mountain… Climbing at altitude is like hitting your head against a brick wall – it’s great when you stop.
Hit the nail on the head.
Unrequited love is like hitting your head against a wall that isn’t there.
Sometimes life hits you in the head with a brick. Don’t lose faith.
You don’t lead by hitting people over the head – that’s assault, not leadership.
You know, the mark of intelligence is realizing when you’re making the same mistake over and over and over again, and not hitting your head in the wall five hundred times before you understand that it’s not a clever thing to do.
Climbing at altitude is like hitting your head against a brick wall – it’s great when you stop.