How to be 'just be nice' person?

You know what you need to learn and that is a big thing in itself. Being in control of oneself is good and being in the control of one's emotions is probably one of the worst stages of hell. cheers!!

well,everyone can't always be nice person.it's normal to lose temper, not happy. it's also a good way to release yourself. after this, you should think in two sides,for example: when you do the same job with your colleague,but you get much lower salary,maybe you feel unfair,you don't be happy.but in other side you still have a job,there are lots of people searching job everyday.think this way can make you happier? hope it's a little useful for you.