All you have to know is what you are, how you exist.
You don't have to believe anything.
Just understand your mind; how it works,how attachment and desire arise, how ignorance arises, and where emotions come from.
It is sufficient to know the nature of all that; that alone can bring you happiness and peace.
Thus, your life can change completely; everything turns upside down.
What you once interpreted as horrible can become beautiful.
Your Mind is Your Religion ( Budha)
