Sounds like to me this is a CHOICE.

Jellyfish… everything you do is your choice and nobody else's. You shouldn't let your grandmother and parents control who you are. Youve got to make the decision. Do you want to spend the rest of your life like this… living this way? Because if this IS what you want then by all means lay in bed all day, watch the time go by.

Or… live a little, actually LIVE. Get out of the house find hobbies take a walk hunt for work go to social settings. How about starting a work out or diet plan this will give you something to work for… or if you cant work for yourself then do it for your grandmother- she needs you. Dont you know? Everything you do is a choice… the only one who can make it is you.
So make it a choice to lift yourself up off the floor…

Listen to the song 'Dare you to move' (It's an older song and I can't remember who it's by… better yet listen to it outside somewhere.)