What must I do

Hello, I am a twenty-three year old husband and father. I have an extreme case of ADHD. I was diagnosed as a child and have never grew out of it. Instead it seemed to worsen over time for me. As a child I had many nicknames such as the son of the Devil in fact my ADHD was so bad I was suspended and almost expelled my second day of Kidnergarden. Yes I took medications which did help some but it was too late I was already alienated from everyone including my own family which has lasted even to this day. For awhile I actually had control of my ADHD probaly because i was always active physically and mentally. But as i turned 20 it seemed to comeback but at an even worse rate. I have now even gotten a severely bad temper in which I yell, scream and argue even more now with my wife whose is a non-ADHD spouse than I did as a child. Whats also worse is that I used to try to do things around the house but now I plan and promise to do something but I never do not even the dishes. I used to spend a lot of time with my wife before but now its rare if I do if when she begs and cries for me to I still don't . Its even hard for me to pay attention to my child instead I am usually either watching TV, playing video games, on the computer, or some other stupid thing. I even started to treat our dog badly since our daughter was born. I have no kind of income or anything right now to afford our rent, and other bills let alone the medication or doctor visit. By the way there are not many jobs here in the area including fast food. So the stress added to it is making me even worse as to where i don't really want to do much but eat, sleep, and watch TV. I have no idea what to do because this is causing a major strain in my marriage and more. So can anyone please help me or any advice you can give will be appreciated. Thank you for your time and patience.