It depends Because Sad People Wants To Be Happy but Sometimes You Need To Be Sad because How Sad You Are In Past The happier It will become In the Future.  You Need To Accept The Trials In Your Life To Reach Your Goal.  But if The Contentment Is their For Example You love Your Wife But Your husband/wife Cheating And You Choose to stay people think You choose to be sad But The Thing is If You Choose To Leave your Wife Or Divorce him/her its more painful and Its The most Saddest part .