To want what the Divine wants in all sincerity is the essential condition for peace and joy in life. Almost all human miseries come from the fact that human beings are almost always persuaded they know better than the Divine what they need and what life is supposed to bring them. The majority of human beings want other human beings to behave according to their own expectations and life circumstances to follow their own desires, hence they suffer and are unhappy.
Only by giving oneself in all sincerity to the Divine Will does one gain the peace and calm joy that arises from the abolition of desires.
The psychic being knows this definitely. Thus, by uniting with our psychic being, we can know it, too. But the first condition is not to be the slave of personal desires and mistake them for the truth of one’s being.