Is there a God?

I sometimes wonder if there truly is a God.  Throughout my life, during my darkest hours, something good always happen for some reason.  When I'm lonely and suicidal, some new person pops up out of nowhere and says "hey, I seen you from somewhere blah blah..."  There is always some spark of hope, something that lifts me up to keep going.  But doing this over and over again, falling down again and again, it gets tiresome.  When I was 12, I was coming home from school about to cross a street, suddenly there was this booming voice in my head and told me to stop.  Less than half a second later, this car comes out of nowhere and runs the red light.  If I hadn't stopped I would be nothing but a rotting corpse right now.  Kinda wish I was...  I'm doing my best to change my life, to make it go in the direction I want it to go, but I want to know is there a God.  Is some higher power steering my life towards some greater purpose?  Give me a sign, any sign...

INTJs are supposed to be rational, logical, and scientific, that is what I am, but I wonder can God be proven or disproved?  The amount of stuff that happens to me, the timing and all, just seem so coincidental.  I know the universe doesn't revolve me or any one person, but I can't help but wonder if there is some guardian angel and higher power watching over me.