Successful people have limits to their interest, time, and energy and so you do. But you continuously find it hard to say “no” to things that do not go in line with your priorities of life and goals as well.
There have been recent studies conducted on how happiness can be increased and maintained and science has finally proved that happiness is an ability that can be acquired through practice. The science of happiness is so obvious, its speaks for itself. But you don’t need science to know that happiness can be found in every simple daily habit.