What makes you happy?Are you happy when others are happy?

As myself ,the greatest pleasures seem to come from hard-won achievements。For example,if after a lot of hard work,I passed an important examination,or finished a big project,or I have learn some interseting skill I like,all of these would make me so happy。I thinjk,happiness is so easy to get if you observe everything around you carefully。Just like help someone in need,both of us will feel happy。If the people around you smile evertytime ,you will smile also without reason,right?