Is this even possible?

They say, pray to god and he will answer all your prayer
Is it even possible? 
What happen when a guy is very desperate and have strong desire on something?
What if he pray and pray and pray and things just gone even worst?
So is praying relevant or just a believe?
Once a girl I love told me, learn to love and let go of anger.
But now she left, love is unnecessary.
I'm born to hate not to love? Am I?
Everyday after she left, kept dream of nightmare. All about her.
I can't protect her in the dream, all of it?
But in reality,  she is save and sound.
So is this the sign from God saying, "don't touch my daughter,  you can't protect her, get away from her or else you will have nightmare. "?
I'm really confused,  these nightmares continuesly  drained my mental energy, and now, I'm mentally ill.
Who cares? All I can do now is sitting alone wanting to shorten the time to meet hell?
All I ever pray for now is simple, but still is all about you.
I might not be part of you but you are everything to me? Confused.  You had left happily and having a new love and new boyfriend.
I'm the one who called past and dust.
Why should I even bother?
"A guy who keep his words is only considered a real guy."
This is what you said to me and this is what I can't become.
Well, maybe I'm trying to prove to you? Or just unwilling to give up?
Is this what I should do? Praying blindly for you? Or suffer with the past we made together?
Should I just start to drink beer everyday and night to forget?
Life is meaningless and everyday I pray and pray and pray, but one day if I stop praying, things might gone chaos.
So hope prayer will help =)