Sounds like you have a melancholic temperament. Think of how many moments you didn't enjoy while thinking of the moment you didn't enjoy!

These ideas about yourself are not getting you anywhere--tune into your urges and instincts. Feel the presence of your body and your environment and just let it be as it is. You need to let go of the idea of how this moment should be and accept it in all of its rich complexity. There is only one moment: now. only you as you are right now. Not you as you were, or you as you're going to be. Just you, now. And the you that lives in this moment is more exciting and has more potential to be happy than the you of any other moment.