Positive thinking will let you do everything better than negative thinking will. Zig Ziglar
Negative thinking patterns can be immensely deceptive and persuasive, and change is rarely easy. But with patience and persistence, I believe that nearly all individuals suffering from depression can improve and experience a sense of joy and self-esteem once again. David D. Burns
What I think I have in common with the school of deconstruction is the mode of negative thinking or negative awareness, in the technical, philosophical sense of the negative, but which comes to me through negative theology. Harold Bloom
I've never responded well to entrenched negative thinking. David Bowie
For many, negative thinking is a habit, which over time, becomes an addiction... A lot of people suffer from this disease because negative thinking is addictive to each of the Big Three - the mind, the body, and the emotions. If one doesn't get you, the others are waiting in the wings. Peter McWilliams
Negative thinking is always expensive--dragging us down mentally, emotionally, and physically--hence I refer to any indulgence in it as a luxury. Peter McWilliams