So now you're 22 and ready to have another go at it.

Your description sounds like a tough but productive experience. I've never had a paranoid trip (I've had four really bad trips- 2 on acid, one on DMT and one on shrooms/rue... But I wouldn't necessarily describe any of them as paranoid) but that may have at least partially been a product of where you were at that time. At 22 you'll have a much deeper perspective about yourself, and should be able to make way more sense of these feelings.

Trying to meditate and stay in control may seem like the best approach, but is not always possible. If you read enough experience reports you'll find a lot of instances where an experience starts out dark, paranoid, fearful, and that fighting the fear just seems to make it worse. Sometimes total surrender is the only option... And generally speaking, once you stop fighting, the darkness clears and you can get on with the real experience. Often the fear is just a gateway that you need to pass through.

Safe travels!