You have three choices
- Help yourself, god helps you = stuff gets done
- Help yourself, god doesn't help you = stuff gets done
- Don't help yourself, god doesn't help you = stuff doesn't get done
That phrase kinda forbids the act of god helping you if you don't help yourself.
There's an interesting and DIRECT correlation between helping yourself and stuff getting done.
Additionally, this is an unnecessarily selfless phrase in which one gives God the credit for something that he or she did themselves.
Of course this phrase isn't even in the bible so my interpretation should not upset anyone.