You are better off to believe Me even if you never get what you want then to live your life full of doubt and unbelief and negativity, having a sour attitude and being miserable all the time. Faith makes you happy. Faith gives you a rest in a world that can sure wear you out.
Faith is....the leaning of your entire human personality on Him in absolute trust and confidence in His power, wisdom and goodness. Colossians 1:4