Midnight vehemence

What is this feeling in my chest, that disables me to sleep at night? I am shaky, jittery and paranoid. Its this heaviness on my heart that I can't handle always a doubt, always a question in the back of my mind. Rest, trust and certainty all have left me. This pain never ceases always lurks away from a corner at my most susceptible moment. maybe its time to say farewells