Sometimes I wonder if my heart could stop beating all of the sudden, the same thought keeps comming when I am on an airplane. I always think that the engine of the aircraft could suddenly stop working, because it's been working non stop and things always come to an end. I dont really like having these thoughts. Sometimes I also have issues about breathing, it's like my brain comands it, I always think that I will not breathe if my minds tells me not to and then I get shortness of breath. it is so weird haha.