awakened in the night

Sometimes I get this horrible feeling and I wake up in the middle of the night frightened. I wake up because I am afraid that I'm not doing enough. I wake up with the feeling that if I died right here and now I wouldn't be remembered after my death for anything significant. If I died right here and now I wouldn't be content with the life I have lived. It's a terrible feeling to never be satisfied. I am always wanting something new, something different then I get to where ever it is I've ventured off too and I just want to move on to the next big thing. I need to get out of here. These four walls are killing me! I hate the normalcy of this life I am leading and being confined to this house. I want a lot of things right now but, mostly I want someone to tell me this is normal to tell me it's ok. I want to stop wanting.