6. Dynamite Kid
The epitome of "personal problems stopping someone from achieving their full success", if you Googled such a phrase, Dynamite Kid might very well be your first result. Considered by many the pound for pound greatest wrestler of all time, his attitude and behavioral problems, coupled with steroid and drug abuse led to his career being shortened and spending a majority of his better years wrestling outside of in Canada and Japan. Like many others on the list, he was largely hindered by his size, and according to many had a small man's complex that led to paranoia and "roid rage".