Yes, God is the end of your work, but He is the beginning also.
But there is another danger besetting your path. I mean the error of regarding your own capacities instead of your work, of putting self-consciousness in place of God.
The tillage of the soil occupies the vast majority of those who work for their own bread.
This is God's work. Therefore it must be triumphant. There is no place for misgiving or despondency.