Hey, I decided to write some of my thoughts out about your situation. I am an Intj so strategy is what I do. Your post has alot to break down so I am going to work through some of the important parts in your post while keeping it brief. I hope this advice helps you move forward and build a better life.
Self Image & Past Experience - Alot of your post seems to be driven by past experiences. As difficult as it is you will need to work past them and grow from them. Recognize your fallacies, that you are worth more than what those around you say. Embrace and overcome, if you believe in the human potential believe in your own potential as well. You are capable of doing the things you want. While you can't do everything, you can do great things. Visualize what you want out of life, select one or two things that you would love to do more than anything and work to make that happen. If you need assistance you can message me, I will see if I can help you develop a strategy. Keep a growth mindset and look up what that is it will help you. Remember what you are going through is temporary and if you make the right moves you can achieve a future you are happy with, you can win.
Work & Income - If you are unhappy at your job look for a new career or try to switch to a position you are more comfortable in. Don't leave until you find something that will be equal to or greater than your income currently. Try to save some money from each paycheck, invest (best option) or put it in a saving account. It seems you are creative by nature and have artistic tendencies. There are plenty of ways online to generate money for your artwork. Start a website with ad, publish youtube videos for your animations, start a patreon, and so much more. If you are willing to pursue one or two passions and develop your skills you will be able to make money doing what you love. Practice these things, and work on them in your spare time outside of your job. When it is sustainable you can switch to doing it full time.
Relationships - Your relationships seem toxic, you are going to have to distance yourself emotionally from them. I don't mean abandon your family but you should not be concerned with their opinions of you. Ignore, and recognize that they have flaws themselves don't let them poison you or drag you down.
"Vices" - I put this in quotes because what you described aren't negative things by nature. Adderall and Cymbalta are medications used for conditions. I was prescribed Adderall myself and am currently on a new derivative medication. These are things used to fill in a deficit or improve ones life as long as you do not have an addiction and it does not negatively impact your life don't feel bad about using them. Eliminate that cognitive dissonance. Marijuana is another non-vice, many people good, bad, rich, poor use marijuana let it enhance your life, maybe only when your depressed or before dinner. Do not let it consume your life, as with any drug use in moderation. If you are a futurist, you should be familiar with the concepts of using substances to enhance ones self, neuroenhancers, medications are all widely accepted and encouraged practices for forward thinkers.
I wish you the best of luck, I hope my bit of advice helped. Overall no one knows you or your situation better than yourself. That means that only you can truly find the way out of this situation and make steps to achieve your dreams. Don't think small, think big shoot for the stars, and even if you fall short you will still find yourself amazed at how far you have come.