There is surely a STRONG link between childhood memories & happiness as an adult. Re-experiencing things that once gave you comfort perhaps reconnects the nodes in your brain to bring you deja vu Happiness.
(Think of that nice song you heard plenty of times as a kid. The walk you had with Grandma in your village. The movie you watched with cousins and laughed your head off. I am sure this is the case even with the not-so-nice memories. Childhood experiences are so so critical.)
We must invent a body sensor+audio device that'll boom out a context-sensitive quote or two when one begins to get angry. :-)
Imagine: You are about to scream at someone because they are slow on the uptake and this device immediately says in a deep and strong voice "Be kind to everyone - Dalai Lama" or something to that effect.
What fills the huge gap between education and attitude or behavior? The gap that we rarely fill......! Inspiration, introspection, insight AND extreme effort! Sigh. E.x.t.r.e.m.e E.f.f.o.r.t indeed.
Life sometimes delivers gifts that seem wonderful until you spot the hidden price tag that it has forgotten to remove......and your attention shifts elsewhere. ;-)
Simplicity is not how easy it is for the TECHIES to IMPLEMENT the solution! It is how easy it is for the USER to understand and USE the solution! A TV may have a million circuits embedded inside it, but at the end of the day, the knobs outside must be just enough and easy to operate.