The following equation represents the way many of us live our lives, we work many hours a day to earn money, we struggle now in order that we can be more secure later.
We sacrifice time now in order that we can have money and/or time later.
Which leads us to the thought that:
Struggle+Stress+Sacrifice=Success=Happiness
or to simplify:
Unhappiness=Success=Happiness
And to simplify further:
Unhappiness=Happiness
Food for thought huh?