To live a happy life it is necesary to never be a Prisner of your past ,
i dont know about the past of all peoples but i think everyone face hard life in past some good memories as well
but if we stay be a prisner of our past we will not be able to make new memories and we will miss the time to make new memories in success ,
because if the past time spent in sadness , hard , with a lot of problems then we will stay sad in our present and in our future we will be upset all time becasue of our past and we will miss the oppurtunities to be success in our present life,
And on the other hand if our past was happy , glad, and spent with very beautifull memories then our past will still destroy us because we need to live in our present life, to have more fun joy and make a lot of memories of sunncess in our life and with good relations