Thinking that you are worthless doesn't make you worthless any more than thinking you are a donkey makes you a donkey; you are who you are and your thoughts are just thoughts you've picked up in the course of living; many if not all are not true; certainly that you are worthless is false. You hate you because you can't manifest reality as you want it to be; you are ambitious to have the power to make everything go the way you want it to go; you don't have that power and you hate yourself because you refuse to love a person who does not have the power to make things as he wants them to be.
Try ignoring your thoughts; focus your attention on your senses; enjoy your sensory experience; appreciate your body and the various experiences it allows you to enjoy. It's your mind that is making you miserable; dethrone your mind, don't take it seriously; don't take your hate seriously. Relax and enjoy.
