Knock Yourself Out

It's something unattainable
That you can't live without
And now the unexplainable
Has you riddled with doubt

Things began, things decay
And you've gotta find a way to be okay
But if you wanna spend the day
Wondering what it's all about
Go and knock yourself out

Why we're put in this mess
Is anybody's guess
It might be a test
Or it might not be anything
To be too worried about
But if you're still in doubt
Go and knock yourself out