Need, Want, whats the difference?

I need a hug.
I need someone to love me.
I need someone to care about me.
I need my best friend.
I need my cousin.
I need my Auntie. 
I need who my dad used to be.
I need my granddad to be better.
I need him♥ 
I need to get out of here. 
I need to get away for everyone
I need to be skinny.
I need to be fun.
I need to be pretty.
I need to be smart.
I need to BE you.
I would do anything to talk to my cousin again
I would do anything to get dads life back for him.
I would do anything to be with Him♥
I would do anything to make my Auntie better.
I would do anything to be with my best friend all the time. 
I would do anything to save my granddad.
I would do anything to die.