When evolving there are no negative repercussions if you "fail" to achieve your current goal. If you do not fulfill your "destiny" you do not get punished or anyhting like that you simply start over, you start a new life with possibly the same "lessons" that you needed to learn but failed to learn in the previous lifetime. Though I should say that life is not a school and you are not here to learn lessons you are simply here to evolve and experience the divine.
Also; you ARE your soul, you are not your body or your mind, you are your soul. Thus you can never be 'disconnected' from God in any way, it is just not possible.
If the soul's purpose isn't actualised in a lifetime, even after many lifetimes of fine-tuning, then the soul will simply return to the physical to come to an awareness of it's 'purpose', it will take as long as it wants to and chooses to take to fulfill this purpose.
This is why Jesus visited Earth, to remind us of our purpose so that we would not be lost in the hell that is non-actualisation. That is what he meant when he said the word hell; he did not mean an acutal place where you are in everlasting torment, what purpose would God have in that?
Though you can never become lost in the hell of non-realisation forever, for God is there with you in every moment, holding out It's hand, guiding you back home.
It is your deepest desire to return home, even if you do not even know it yet, thus you WILL return home one day.

Enlightener