Read and Practice 

Dr. James T. Fisher, a leading psychiatrist, has said, and I quote, “If you were to take the sum total of all the authoritative articles ever written by the most qualified psychologists and psychiatrists on the subject of mental hygiene, if you were to combine them and refine them and cleave out the excess verbiage, if you were to have these unadulterated bits of pure scientific knowledge concisely expressed by the most capable of living poets, you would have an awkward and incomplete summation of the sermon on the mount”.

End quote.

It is no wonder that men have called that sermon the manifesto of the kingdom of God and the Magna Carta of Christianity.