Hi Jesse, welcome to JWN! I'm so sorry for you to have these feelings, but the only thing I thought while reading your story was that you've been 'programmed' by your dad's behaviour in the past. How old was he when he joined the JW's and started to have doubts about the life he led up until then? And how old are you now? Maybe you can see a comparison here.
Always remember that you are living YOUR life, not your dad's! So you are allowed, or obligated if you will, to make YOUR decisions even if they're totally different than what your father did. Don't step into the trap of starting to live your dad's life by repeating what he did, by thinking that feelings you've sort of 'adopted' of him are yours... they're most likely NOT yours, they're your father's, put in your head ever since you were a child! Don't believe these thoughts, make up your own by reading new things (the Steve Hassan books are a great start, you'll recognize an awful lot in them!) and exploring the world yourself.
And like others already said, please stay away from the JW-cult. They're no help at all, they'll only make things worse. And you may not believe it, but I'm certain that even if you became a JW your father would keep on telling you how bad you are. That has nothing to do with you, it says ALL about HIM and his mindset. Stay away from that mindset, harness yourself mentally when you meet your dad, because complaining and negative mindsets are contagious and bring you nothing.
I'm wishing you all the best and really hope you'll find some better feelings and thoughts to make life more valuable. And keep posting here, there are lots of people who are willing to 'listen' to whatever you want to share and also lots of people with experiences like yours to comfort and help you!