Happiness is a matter of finding security in insecurity. This is because whatever security occurs in life, is temporary. If you can find security in the temporary nature of phenomena, then that makes you permanently secure. That’s known as paradox. It’s the logic of Vajrayana.p43, Tracts of the Sun : An Earth Orbit of Vajrayana Expressions. Ngakpa Chögyam and Khandro Déchen, Aro Books, 2022, ISBN 978-1-898185-28-4