Do we really know what we should be concerned about in life? And does that protect us, or cause us more trouble? The Buddha teaches us that developing strength of mind is the most important thing to ensure our happiness.
One of the Dhammapada verses Bhante talks about:
34. As a fish when pulled out of water and cast on land throbs and quivers, even so is this mind agitated. Hence should one abandon the realm of Mara.