In my experience, being busy and working hard is the key to sanity/happiness.
Experience is a dim lamp, which only lights the one who bears it.
There's a vintage which comes with age and experience.
Jon Bon Jovi
Experience is making mistakes and learning from them.
You cannot create experience. You must undergo it.
Happiness is your nature. It is not wrong to desire it. What is wrong is seeking it outside when it is inside.
The value of experience is not in seeing much, but in seeing wisely.