Start with the gym, anything that gets you outside. Now, playing video games isn't wrong, your body needs time to wind down. The whole wake up at 4am everyday and work 23 hours a day shit is bad. If you can go out and enjoy life, you can also stay home on a sunday and play some video games. Learn a new skill for when you're in a youtube binge like learning a language. I hate that playing games and enjoying some twitch is seen as bad, it's only bad if that's all you do. Your body needs to move and it needs to relax just as much.