happy live that if you want

some times maybe  you will feel very bad and though the day is not your day,on the time, you can  sober  your emotion  than thought about another side on this thing.My mom is a optimism,she ever to run in to really bad in her marrige than she decided  to bring up my young sister and me by her selfe.She ever told me: happy is live and sad is live ,too.So,we can choose which life we wanted or not?