JOY is in you.
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More or less, we have no scientific device to enhance the joy.
 It is purely logical.
You are responsible for your own mood, your own happiness and agony.
I think it is your own strategy to feel and make your world as you like.
 No one is responsible for your agony except some.
 Most of the case happens as you wish.
So,
wishing something means you should wish consciously, seriously.
 Wishing carelessly means you are planting a seed to bring harm to you.
We are all the part of nature.
 We should train ourselves to learn the indication of the nature around us.
The nature is all things including the people around us.
Let us study all to avoid pain and embrace bliss.

Thanks.