One of Jacob’s Codes says this:

If you take it on, stay with it.

That does not mean a man never adjusts.
It does not mean he never learns.
It does not mean he never changes direction when wisdom calls for it.

But it does mean he does not quit just because the work got heavy.

A man’s character is built in the staying.

Staying with his word.
Staying with his family.
Staying with his duty.
Staying with the man he said he wanted to become.