The principal revelation of the Jesus Christ teaching is the omnipresence and availability of god, and the belief that God not only transcends His universe but is everywhere immanent in it—that He indwells in it.
If you really believe in the existence of God you should be happy and cheerful. God has all power, and God is good; so life must be good too.
Meet the world with a smile. You owe this to God, to your fellows, and above all, to yourself. If you go about with a face like an east wind, what can you possibly expect to attract from the world? We all know people who carry a fixed, frozen, mirthless, almost professional, smile. Such a smile is just a permanent wave in the face.
Smile, even if it takes a little effort, and keep it up until it becomes spontaneous, as it will. In the graphic language of Hollywood, register joy, and hold it!
For ye shall go out with joy… (Isaiah 55:12).
We instructed by the Bible that “this is the day the Lord has made, let us rejoice and be glad in it, ” and that we are to be “thankful for all things”. This is not meant like the ubiquitous “have a nice day”. It means that God created an Eden for us to inhabit in joy, and that is his desire for us. It is God’s expectation that we should be filled with joy and peace in all circumstances. If we are to live according to God’s will, then we must fulfill the purpose for which we were made. It is our part of the job to live happily according to our created purpose.
Have a joyful and glad day,
Z gardener
Good Morning Garden 
This response from a new gardener. Z.
We need to remember these truths. My preacher always talked and still talks about realities and mysteries. They seem contradictory, but they are two sides of the same life.