Give advice that matters in one sentence. I got run out of a job I liked once, and while it was happening, a guy stopped me in the hall. Smart guy, but prone to saying too much. I braced myself. I didn't want to hear it. I needed a white knight, and I knew it wasn't him. He just sighed and said: When nobody has your back, you gotta move your back. Then he walked away. Best advice I ever got. One sentence.