stop worrying about money

man I have the strangest thing happening in my life, its like ive turned pestimistic(misspelled) I used to be full of energy and love but now All I do is worry about this and that and im full of anger and hate! this sucks ever since I read this one book I have had nothing but pestimistic thoughts. Maybe I should see a doctor I was reading a remarkable medicine has been overlooked and Jack dreyfus has the same problem down to the T.