Too many times in life we lose our joy because we are trying to do things by ourselves. God never intended for us to live this life alone. He desires us to lean into Him daily like an infant is dependent on its parent for everything.
If we grasp this little idea, it will be a BIG change for our lives. When we solely rely on God and the life-changing Gospel that He has freely given us, we begin to realize that all of life can be filled with joy–because all of life (the ups and downs) come from Him. He is sovereign, He loves us, and His life-changing Gospel is for us.