The pursuit of perfection often impedes improvement.

"The Lesson":

Yes, my fretting,
Frowning child,
I could cross
The room to you
More easily.

But I’ve already
Learned to walk,
So I make you
Come to me.

Let go now—
There!
You see?

Oh, remember
This simple lesson,
Child,
And when
In later years
You cry out
With tight fists
And tears—
“Oh, help me,
God—please.”—
Just listen
And you’ll hear
A silent voice:

I would, child,
I would.
But it’s you,
Not I,
Who needs to try
Godhood.

It is failure that guides evolution; perfection provides no incentive for improvement, and nothing is perfect.

When you aim for perfection, you discover it's a moving target.

If any of these be wanting, a Christian is not perfect, so much as in the perfection of parts. He is but half a Christian who is an orthodox believer, if he be not practical also; and he is but half a Christian who is practical, if he be not an orthodox believer. These ends of Scripture do not consist nor stand sure one without another.

Strive for continuous improvement, instead of perfection.