As God is omnipresent and omniscient, every action of ours is  a worship of Him. Both good and bad actions as per our definitions are nothing but worshiping God. But every action has an equal and opposite reaction and if we do not do good actions in sufficient number, what remains towards the end of our life span will be nothing but miserable fruits. Good and bad are defined from our knowledge, though limited, and are not concerned with God or Nature. Our rules and knowledge help us to choose one way over the other but the 'Free Will' is defined and validated only within the human domain and for a very short time.