Happiness and sadness are two sides of the same coin, just like love and hate.
The opposite of love is indifferent.
When having a goal or dream, and when we achieve it, what is the desired outcome that makes the effort worthwhile?
Is It Happiness?
Excitement is the more practical synonym for happiness, and is precisely what everyone should strive to chase. It's the cure all.
When people suggest to follow your passion or your interest, they are in fact referring to the singular concept: excitement.
You should be asking yourself, "What excite me?"
Timothy Ferries, 4 hour work week