Everything They Told Us Is Wrong...
...or at least it seems so. Now they say that self-exams aren't necessary and that you don't need a mammogram until age 40. I'll have more about this. In the meantime, you can read the study and recommendations here.
If you found your cancer via under-40 mammogram or breast self-exam, please comment! Of course, all comments are welcome, by survivors and non-, as long as you're a real person, not a computer program.
Meanwhile, Our Bodies Our Blog concurs with the guidelines, and explains why, providing important history and perspective, with excellent links. Check it out.