Just watch someone (maybe yourself). The person is physically active at all times . . . getting up, sitting down, eating, talking to someone, sending an email, cooking a meal, driving to work, and so on. All these physical activities are motivated at the mental level by the brain. That is, you do what you think of doing. To do the right things, you need to have the right thoughts. And you are sure to have right thoughts when you have a heart that's been purified by God. Therefore, know the Lord well and you'll be blameless in whatever you do.