If there is one God, then there is only His way to attain Him, not another. One must follow that way and reject the other. Worship not him who is born only to die, but Him who is eternal and is contained in the whole universe.
It gets better: there's a light at the end of the tunnel. It may take one day, it may take ten years. But one day, you will find happiness if you manifest it. Put that energy out, and it'll come back.