You are @kaylinart, happiness is just a matter of choice but for some choosing just to be happy is difficult. This may happen person who dont seem to understand what happiness. There other people will treat happiness as some sort of feelings whenever you have succeeded on something you want and if fail, happiness is not a matter at all. Everything that happens in life has reason, if you fail on something doesn't mean that you are failure, it might mean that there is something that is intended to you.