In survival it is called “The Rule of Threes”--You can survive three minutes without breathable air. You can survive three hours in a harsh environment without shelter. You can survive three days without drinkable water. You can survive three weeks without food. Everyone has a deep spiritual thirst. We are longing for soemething greater. Some try to satisfy the thirst with things found in this fleeting world. But Jesus said, “Whoever drinks the water I give them will never thirst.” Only Jesus can quench our spiritual thirst.
What do you really need right now? If you lack something you want, life goes on just fine. If you lack something you need, that presents a problem. So, to answer the question you must understand your greatest problems. We do not look at our problems to despair, but so a solution can be applied to them. The solution in Christ. In Christ, all our greatest needs are met.