Happiness is not a goal...it's a by-product of a life well lived.
Happiness is always a by-product. It is probably a matter of temperament, and for anything I know it may be glandular. But it is not something that can be demanded from life, and if you are not happy you had better stop worrying about it and see what treasures you can pluck from your own brand of unhappiness.
Simplicity is not the goal. It is the by-product of a good idea and modest expectations.
Happiness is not achieved by the conscious pursuit of happiness; it is generally the by-product of other activities.