You speak very well of the serenity that can result from mindfulness. Serenity and contentment is what people should pursue. Happiness is but a fleeting emotion like sadness (not to be confused with depression). I seek contentment, which is not settling but a hopefully high-altitude baseline, coming from within and connection to without. It doesn’t stem from the acquisition of attachments but awareness of connection to the world and the universe as a living, breathing, and heart-beating organism and from alignment of mind and soul and discerning my why — my drive — from discovering who I am at my core.