Yes, I can confirm that prayer works for me.
Shaker's entirely plausible point about confirmation bias notwithstanding, let's for a moment assume that you've accurately assessed the situation, and that when you pray for an outcome that you are working towards you are genuinely successful more often than when you don't.
How do you determine this isn't a sort of 'psychosomatic' effect - you subconsciously sabotaging your own efforts BECAUSE you haven't prayed, or you putting extra effort in to meet the obligations you feel BECAUSE you've prayed (so it's important)?
O.