How can I get my memory back?

For as long as I can remember (lol… irony) I have had memory issues; it’s mostly always been short term. I want to be able to remember things the way everyone else can. Is there anything I can do?

Examples:
You look at your watch and have no idea what time it is.
You walk into a room and don’t know what you’re in there for.
You change the TV channel during a commercial and don’t know what you were watching.

Everyone has those experiences. Now picture those on an everyday, everything type of scale.