Anything is possible means you can do anything, have anything, go anywhere, be anything, as long as you believe. What is it to believe? Believing has nothing to do with mere mental assent; it's not passive; it's active.
The question then is, what do you believe? And what can you believe? So, it's about what you believe. What you believe, you become. Nothing is impossible, because anything is possible!
Instead of crying about the situation, lamenting how dire it is, effect a change. Refuse to allow circumstances run your life. No matter how fierce the attacks may be, refuse to be moved; walk on in victory. It makes no difference what's before you, or behind you, effect a change.