Heights/Falling - I used to have reoccuring nightmares where all I was doing was falling. And when you're meant to hit the bottom and die, you wake up.
Drowning - Same sort of problem, except that I almost drowned twice when I was little. When I was five I fell into the family pool while hitting my head, luckily my older brother jumped in and saved me. I got caught in a rip when I was seven along with my cousin. We had no parental supervision, we were told not to go into the water while the flags weren't up...we were disobedient. My dad came down to check on us, he fished my cousin out of the water first as she was closest and by the time dad got to me my head was under the water.