New atheist here, gotta say, not loving it

[Abaddon_ire]

Bull. You really think that the only thing stopping you from engaging in a rape and murder spree is god? If god was proven to not exists right now, you would immediately run to your neighbours house and commit hideous acts? god is the only thing holding you back?
If true, your head is messed up.

Many Christians seem to think this.  Most will at least claim that they get their morals from God or the bible.
The fact that this is demonstrably not true, since people without religion and with different religions hold similar morals based on their society not their religion, is just one of the many things they put their fingers in their ears and go "lalalalala" if you mention.

He might fear it, but we all know that if he did lose his faith, he'd be fine. He might have a bit of an existential crisis, but he wouldn't fundamentally change.  I think it's a pretty common fear among theists, though.  They are taught this (brainwashed with this belief) after all.

Sorry for being a bitch at you earlier.  I got a bit over defensive of the OP. :p

Don't worry about it. I tend to be a bit cynical about those kind of posts. Too often I have seen the faithful play that kind of wolf in sheep's clothing game, commonly referred to as lying for jesus. There are certain common features to that dishonest tactic and the OP ticks a lot of those boxes. For example, the "atheists have nothing to live for" meme. If anyone genuinely feels that they have no reason to go on living, then there is some other underlying issue. It has exactly nothing to do with theism or atheism directly. 

Take Andrea Yates, for example. I can guarantee you that NO mainstream faith mandates the killing of one's own children to fast track them into heaven. As it turns out, Yates' actions had nothing at all to do with christianity, she had a huge history of mental illness.

Returning to our OP, let's, arguendo, assume that it is a genuine post. In that case the OP has at the very least some form of depression going on. But a forum such as this is not equipped or qualified to dispense either diagnoses or cures. The phrase "Seek professional help" is often deployed as a pseudo-clever rhetorical device to the point where it is rendered meaningless. Nevertheless, occasionally it is the best advice which may be honestly given. 

If the feelings expressed in the OP are genuine, then I would say that I am not a medical professional of any type, so start with a visit to your GP and get referred onwards to whatever is the appropriate path for you. Atheism is not your issue at all. (generic "you" above). This forum (or any other) can be a support, a place to vent and other such things. One thing it cannot do is act as a surrogate medical professional.