You won't like this, it may offend you. I am only going to say this because I have been in places where it felt hopeless. Like it could never get better.

It's not hopeless. It can get better. You just have to want it more than you wanted anything in your life, because it will be the hardest thing you ever do. Your choice, be a winner or be a quitter.

And yes, a therapist would help you a lot. Consider contacting community mental health or other agencies in your area and see what they can do for you.

You can choose to believe this or not, but I know what I am saying, been there done that as they say. Weight, depression, isolation, anxiety. It can be fixed with hard work and perserverance.