What's the secret to being content?

Philippians 4:12 12 I know what it is to be in need, and I know what it is to have plenty. I have learned the secret of being content in any and every situation, whether well fed or hungry, whether living in plenty or in want. One would think that maybe Paul was content because life was good at the moment. But did you know that when the Apostle Paul wrote this verse he was sitting in a prison? Is it possible to be content in the midst of our storms? What was his secret to being content? Paul learned that contentment (happiness or satisfaction) doesn't come from our circumstances, it comes from knowing that no matter what we're going though GOD is STILL in control. When we are 100% sure that God is in control, we can relax knowing that yes I'm going through this temporarily now but the God I serve will turn it around for good. And in the meantime I will remain joyful and continue having a positive attitude.