Yes, there is happiness in this world. Every time you eat, every time you sleep. All the things we enjoy in life — Hashem did them to give us happiness...
We should realize this, and, even though sometimes there are tragedies, by and large it’s a world of happiness. The fact that people are not understanding enough to appreciate it, that’s their fault. If a person would see how lucky he is, he’d be happy with what he has. — Five Minutes a Day