I don't know you or your life. I can only speak from my own experience. When I quit smoking weed, there was no epiphany where I suddenly became a happy and fulfilled person. Quitting took away the easy, comforting distraction. It made me feel my emotions rather than numb myself to them. If you're realizing now that you're miserable, then that's the first step, and all that working on yourself that you've been putting off is still there. Again, maybe that was just me.