I am sooo Paranoid.. How can i stop it?

I am ridiculously paranoid.. If something moves just through ind etc i panic and think someone is there.. the other day i was at home i heard a thud and grabbed my car keys and ran out the bedouse to my boyfriends.. turns out it as the cat jumping off the bed it driives me and my bf mad... re anything is there anything i can do it help.. please?