If Jesus and God were one, as he claimed they were (John 10:30). And, if Jesus prayed, as of course he did (John 17:21) that you and God would be one, too.
Then, are you and God one? The implied answer is “Of course.” But how would you know? Is there some proof? The fact that you are concerned to know is itself the proof. Why else would you wonder if the reality is not so already? It is the ego in you that feeds the doubt, raises the questions, makes you feel as if you’re always just one step away from Eternal Bliss.
Enjoy who you are. It’s a whole lot better than spinning the wheels of human effort to become who and what you are already.