Failed My Cissp today

Failed my Cissp exam today at 150 questions , was below proficiency in 3 domains, near proficiency is 3 domains and above proficiency in 2 domains - spent 2 and a half months studying , Osg,Peter Z videos and dest cert mind map videos - quantum exams cat, did about 3 Cat exams in addition to other question banks .fortunately I purchased peace of mind so have rebooked for December . Guess it is what it is . Seems I have not fully grasped the mindset yet.