Sit in meditation, but do not think. Look only at your mind. You will see thoughts coming into it. Before they can enter, throw these away from your mind until your mind is capable of entire silence.
Two years ago, I heard about a singing class "for people who think they can't." That described me. I mustered my courage, signed up, and found that with proper instruction, I can sing decently! Every week, the deep breathing exercises inspire me; the songs I sing make me and those around me smile. I now understand what I once read: The Australian aborigines say the world was sung into existence.