Maximize joy and minimize pain. All the other psychobabble is meaningless. If you are sane (if any of us are sane), we maximize our joy and minimize our pain. Some have to seek ignorance or delusion to achieve this but there is great risk in that approach as both ignorance and delusion can be fleeting and hard to maintain.
Better to see and know the truth and in that awareness find joy where you can.
Have you ever solved a puzzle, any puzzle? How can puzzle solving not bring anyone joy? Not solving the puzzle can be frustrating, pain.
Knowing your limits is a path to serenity.
The double joy/pleasure of helping to solve someone else's puzzle so we both are pleased brings me great joy.
TEK