It’s our decision to be happy…for only we can decide how circumstances will impact us. In this verse, Paul is saying that during his Christian walk he had gained insight by study and experience to then be able to grasp the concept of contentment. To be content is not a usual human emotion…for we are most times anything but content with things! But we do spend millions of dollars a year looking for contentment…in the way of lavish vacations, or countless relationships. But Paul is telling us that true contentment comes from within and that only we have the determination whether we’ll be happy and satisfied…or not