I can translate it except from few expressions but I don't want a translation I want the authentic russian version.
Person A tries to cheer up Person B by telling him this:

A holy teacher said: "Happiness does not depend on what you have or who you are. It solely relies on what you think".
You have all the potentials to achieve personal and professional happiness.
God privileged you with an incomparable talent, beauty and wealth.
But in a self destructive way you just insist in focusing your attention in the negative things as if there are not any positives.
I always say to my friends: "you must remove from your life all people that bring you sadness & depression and the people you cannot remove (e.g. parents, children, sisters, brothers) you shouldn't try to change them but focus on the positive elements of their character and forgive all the rest".
Start reading the story of a great jew philosopher and psychologist Viktor Frankl and what he discovered when he was captured by Nazis in the death camps.
This will make you feel better.