You can always rely on your fear of busting your flight with the examiner. I think Magro very well summed up my feelings regarding motivation and flying. There is so much more out there in life than to pursue something you are not motivated in, especially when it comes to aviation. Sometimes I wish I was fanatically interested in something else besides my urge to fly airplanes...for a living...It's taken me four years to go from beginning my instrument training to prepping for the CFI check-ride and that is with 110% motivation. Maybe broaden your scope to see if something else peaks your prospective career interests. Accounting, trains, real estate, the armed forces, medicine, law enforcement, the maritime academy, etc. Good luck in what ever route you take.