why I feel like I am living in someone else's body? Why I feel empty inside??

You are not alone in feeling this way. Your inner emptiness might be caused by self-abandonment by not loving yourself. Ignoring your feelings, Judging yourself, need for perfection or something like this
Of course I'm only guessing :)

You are really not alone with this feeling. You need to find yourself, your interests, a purpose in life and learn to love you like you are to stop this feeling and you will be alright.

The answer is becaus humans wordl is doomed!

You probably don't know what you really want to do yet. I know I felt lost until I found out.

Try doing little things that you usually don't do, or learn new things. This should help you in knowing what you do and don't want to do in the future.

maybe try out some new activities that usually helps me when i feel this way ^-^

Maybe you're trans but just don't fully realize it? Or maybe you're like some of us who aren't from here and wanna go home.

I think you are born in the wrong world. There are many worlds but humans don't believe in them. You must believe and you can go there very easily. I know how it works. If you want to know it too contact me:
lollilady358@gmail.com
I'm waiting~