I've gotten nowhere debating theology with the JWs in my life as a result of circular logic. Lately I've taken a different approach.
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Are you 100% sure of your beliefs?
Have you proven them to yourself?
Are you willing to bet your very existence on it?
Do you love me?
If a friend was dying of cancer, would you spend their last days with them?
If you could live for a day with me or an eternity without me, which would you choose?
How real is paradise to you?
Do you understand the implications?
Will you remember me in paradise?
If so, will you have any regrets? (Will you miss me?)
What happens if you change your mind?
What is your definition of free will?
Uncomfortable answering any of these questions? Don't worry, you'll have plenty of time to think about it in paradise.