I don't agree. As already point, many philosophers, scientists, programmers have been bitter people, largely unhappy with life. Some people are bitter by desig

I don't agree. As already point, many philosophers, scientists, programmers have been bitter people, largely unhappy with life. Some people are bitter by design. No matter what I do, I will always have many complains to be unhappy about. Right now, I am trying to boot-up my startup. If it doesn't work, I will be bitter. If it works out, I will be bitter about my other pet peeve - schools killing creativity and I would like to contribute towards making it better. If it too is sorted out, I would be bitter about people being bitter about each other owing to religious, regional or some other non-rational biases. I am bitter about Government corruption and lack of infrastructure in my country. I am bitter about common man's rights not implemented in spirit. I am bitter about morons dividing people on religion and reason, and worse, people listening to them. All of these isn't going to change(some might) in my lifetime. And the only way to be happy about it is to turn a blind eye. If happiness is ignorance, I don't seek it. This would be blatant generalization, but many happy people I have met are blissfully ignorant. They have accepted life as is, and are happy with the current state of thing. I generally listen to all advice, and ignore most of it - the adviser being happy or not doesn't figure in my criteria.