It is not what a man does that determines whether his work is sacred or secular, it is why he does it. The motive is everything. Let a man sanctify the Lord God in his heart and he can thereafter do no common act. All he does is good and acceptable to God through Jesus Christ. For such a man, living itself will be sacramental and the whole world a sanctuary. His entire life will be a priestly ministration. As he performs his never so simple task he will hear the voice of the seraphim saying, “Holy, Holy, Holy, is the Lord of hosts: the whole earth is full of his glory.

It is not what a man does that determines whether his work is sacred or secular, it is why he does it. The motive is everything. Let a man sanctify the Lord God in his heart and he can thereafter do no common act. All he does is good and acceptable to God through Jesus Christ. For such a man, living itself will be sacramental and the whole world a sanctuary. His entire life will be a priestly ministration. As he performs his never so simple task he will hear the voice of the seraphim saying, “Holy, Holy, Holy, is the Lord of hosts: the whole earth is full of his glory.

—AW Tozer
The Pursuit of God

Hi there, I'm Jon.