The purpose of life is to find/achieve pure happiness. I think all emotions are valid and should be approached with the proper attitude. There may be phases that are hard to overcome, and some people survive them by dealing with them in the most harsh way. This way of thinking is very hard to overcome and I don't think that real, "normal" people are like that. I hope you can get through this without losing kindness in your heart. Everything is going to be alright in the end.