Philippians 2:12-13

12 Dearest friends, you were always so careful to follow my instructions when I was with you. And now that I am away you must be even more careful to put into action God’s saving work in your lives, obeying God with deep reverence and fear. 13 For God is working in you, giving you the desire to obey him and the power to do what pleases him.

New Living Translation

We are told to be careful to put into action God's saving work, obeying God with deep reverence and fear.  We are to put our all into obeying God.  But look at what comes after that:  FOR God is working in you....

God's work is the reason we should obey.  We should obey because we can, because He makes it possible.  He is the source of our strength.  The desire to obey Him and the power to do what pleases Him doesn't come from ourselves.  It comes from Him.  And in order to receive what we need, we have to be focused on Him