In my opinion, anyone who claims to speak for God is probably talking out of the wrong end, anyway.

Life is a temporary condition, Henry. And it's uncertain. That's why you have to seize chances when you find them. Pursue what you want. Take risks. Live, love...all of it. Every last one of us is going to die, but if we don't live as we truly want, if we're not with the one we want to be with, we're dead already.

It does take great maturity to understand that the opinion we are arguing for is merely the hypothesis we favor, necessarily imperfect, probably transitory, which only very limited minds can declare to be a certainty or a truth.

To argue with a man who has renounced the use and authority of reason, and whose philosophy consists in holding humanity in contempt, is like administering medicine to the dead, or endeavoring to convert an atheist by scripture.

I’m socially impaired. I get surprised all the time by people saying and doing irrational things. Take gay marriage. Why would some people get so upset that people they didn’t even know wanted to get married?”
“For the same reason men denied women the vote for so long. It threatens their status and their understanding of the world.”
She beamed, delighted that he saw it, too. “That’s right! I had to think and think to figure that out. Though I still don’t see why they’re so scared of changing their minds.”
“Because the world is a dangerous place. If it doesn’t work the way we believe it does, the danger becomes unmanageable.

Every time you are convinced of something you close yourself off from any and all other possibilities. You have confined yourself to that box. At least do it with some conscious awareness of what that box is and make sure it's something you want. If that's ok for you and works for you, have at it. But if you find that upon examining things further that it's not what you want: don't be afraid to change your mind! People change their minds all the time, it's a natural part of learning and growth. Don't be hard on yourself. Accept, and go with the flow. Be conscious of the restraints you place on yourself by the things you believe to know.