Yes, I too have the problem, esp with the heights thing. Where I used to work, I would park at the top of the high-rise parking garage. I would take the elevator down from the 10th story I think it was. The elevator was all glass in the back so you could see the view of the city as you rode down. I would get on the elevator and stand there at the back as it was going down and imagine I was falling instead of riding down. I brought this up to my T and she said it was more like and intrusive thought rather than anything related to manic. The driving too fast seems more like a hypomanic behavior. So I don't know what it is, but I do know that the height thing for me isn't related to hypomania. I was definitely depressed during that time. DOn't know if this was helpful at all.