Hello Fauzia
I really admire you for sharing your concerns about your desire to be thin. It is so easy to compare yourself to other people. Remember: thin is not pretty and can be so dangerous for your body! I strongly suggest you seek help from your doctor or a close friend so you can share your thoughts with those nearest to you.
ED's are so interfering - if you can help it, try and ignore the desire to do as "it says".
Take care xx