DMT is not a life saver. You don't need to rely on anything external to save you, and it would inevitably just pose more questions than it answers.
Take some practical steps in your life. You've already identified potential issues which shows you have the desire and ambition to make yourself into something better. Trading one chemical for another is not going to address the underlying causes of your malady. Exercise, diet, sleep. Have a job to take care of your basic needs. Groom yourself. Material needs of the body first, then think about far out mental needs
Save your energy and clean yourself up - stop using chemicals and address life head on. It may be uncomfortable or even painful but it is the most direct route to success, of any type. Once you have gained stability physically and mentally, then you can possibly think about whether you want to try DMT or not.
I fell through the cracks myself at a young age, as well experimenting with certain substances. It was pretty, insightful, potentially psychically dangerous, and helped me on my philosophical journey. But it didn't help fix my life, indeed it only kept me from doing so for longer - by refusing to tackle life head on.