It's amazing how many people love the words 'prove' and 'proof'.

Yes, I'm sure you've proved it to yourself. One can do that without a shred of evidence. Especially with faith.

But self-evidence is not evidence for anything. As Drgoodtrips correctly states, the premise for your "proof" is that Judaism is true. And that's a self-evident premise. All it'll ever accomplish is a personal reassurance of your own prepossessed truth.