As far as I can tell , worrying about anything at all is a pretty good indicator that one has begun thinking that their prosperity & joy is somehow hinged on whatever physical events , other people or angry green martians .... Can you imagine?!

Phone Home , The Universe
First of all , joy & prosperity are created within , Second , the events & people of your life can be changed with your thoughts .And third , for most part ,Martians are neither green nor angry . ;@}