You're

not as deep as you think.
when you fall eight-teen feet under,
and tremble as you speak.
You're not as strong as you thought,
you push and you thrust,
but it's never enough.
You're weak, defeated,
your body lacks strength,
your mind lacks coherency,
your heartbeat sounds faint.

Why do you stay here?
Why do you wait?
So defenseless, so restless,
too fragile, bound to make mistakes.
What's your stance?
Which pursuits do you portray?
Oh, sincere man! I ask you from my grave,
How much time,
lows and highs--
How much more of life can you sustain?