Why are you sad?

"Close your eyes and let your memories embrace you"
In your past, (whether it be as a child, a certain relationship with someone or just a specific timeperiod) you found happiness. Now, however, you have lost it, and wish desperatly to go back and relive it all. Because you focus too much on what has already happened, you have a problem with the future and don't really wish to go there. You have mourned this loss for quite some time now, and are too used to it to let the familarity go. This situation is making you frustrated, because you can't do anything about it, but you remain unwilling to release your memories.