Does a person's happiness depend on other or on oneself?
Happiness depends on oneself. As well as I know, no friends have naturally died because they broke up with her or his girlfriend furthermore each of us decide to be or not to be happy. If we start the day with a positive attitude things are going to be better and because of this your are going to be happier. Moreover there are many thing that you can do to be happier, like exercise, listening to your favourite music, hanging out with your family, etc. In addition and to finish with this I want to add that if you look for happiness in material things, you are going to be miserable forever.