wakeup dead, a real friend would be happy for u and u're success.. yes, they aren't family but if a friend is jealous of u're achievements they aren't u're friend. Moreover making it obvious to u.. that they are jealous and uncomfy with u're gain.
Watch and learn.
Re: Friends and you
With ones success there will always come jealousy.
Be modest/humble about your achievements because you never know who your well wishers are and who is putting nazr (evil eye)on you. I keep my success/achievements in life to myself for the most part for this very reason.