Sounds like a kind of mania, a sense of invulnerability. I've literally walked into traffic before, and actually been hit a couple of times (fortunately I wasn't seriously injured... this however reinforced the delusion of invulnerability.) Interesting about how a manic and depressive symptom look like different ends of the same thought. "I'm invulnerable to traffic... I wish the traffic would kill me." (I know both ends of that.) I've seen the same thing in myself... when manic I thought I could make myself invisible. When depressed I've been frightened that I'm becoming invisible. When manic I thought I could control the weather. When depressed I've thought the weather is following my deterioration... not that I'm controlling it, or it's controlling me, but that the weather mimics my symptoms and moods.

So, just based on my own experience, I'd suggest there's an element of psychosis in what you're thinking. If so, insight is a really good step. You might think you think something, but if you understand the process you can step outside of it, allowing yourself a breather.