Obese League Player Looking For New Beginning

I really dont know where to start. I'm a 29 year old Leauge player that currently weights over 400 pounds. I have not weighted myself in over 4 years. Honestly im afraid of how much i actually weight. I have never told anyone that. Im the type of person that always makes everyone think im ok. Im always the first person to make the fat jokes. Being fat does not make me unhappy or ashamed. What it does do is make things i love hard. I love to play league and just playing the game is hard now. from my hands and legs going numb to pain in my back. I have gotten to the point that i really feel that i dont have long to live unless I make a change. unfortunately i dont have the support structure around me todo that. which is why im reaching out to the community of the game i love. I dont know where to start and Im open to any help or suggestions the community can give me. I know there will some people that just want to troll but that kind of stuff do not and will not affect me. Im scared for change hence me posting this so late at night, but im more scared of dieing. I did not want this to be a sad post. I want it to be an amazing post. A post that helps me obtain my goals. Any support would be appreciated. Starting tomorrow im changing my life and would love for you to join me on my journey. First we are going to start off with taking soda out of my diet and add in some minor exercise. If this is something that yall would like kept updated on let me know what type of content you would like I would be more then happy to provide it. Im not shy ;)

Here is a pic from about 5 years ago. im bigger now.

https://www.reddit.com/r/leagueoflegends/comments/2kzz3e/gragas_halloween_costume/

if you would like you can join my new discord server. I could use the support https://discord.gg/bdMJezA