something like a poem I lost

Can you get through? Unto your natural death? Can you do it? You know I once thought I was far too weak for this life. I wrote a poem about it which I have lost but which went something like:

I have thought that I were too feeble for this life;
I have thought that I lacked the courage for this.
But now from the other side,
I look down at my life playing itself out,
And I see that I had had the strength
To listen to the birds,
And to have watched the tide awhile, and
To have died.