An interesting question to reflect upon is whether suffering can arise without a thought. Most of our problems are related to thoughts, the way we use our thoughts.
Thoughts often arise involuntarily, mechanically and habitually. What is happening, if we observe our thoughts, is that they just come up. They pop up just like that. They arise because of our habits and our conditioning. After they have arisen we get hold of them. A self-destructive person will give himself minuses, or remember the minuses that other people have given him, in a mechanical way. Someone with a self-destructive aspect may occasionally have a positive thought that comes up, but because of their habits they let it go, or just ignore it. But they hold on to their negative thoughts. It is really funny to see what we do with our thinking.