HAIL SATAN!!!!!! I have gone through the same problem (years ago)....and believe me just imagining and visualizing an object won't help...so just draw it on a paper and concentrate on it...and try to retain its image ....and gradually you'll get an adept in it.

HAIL SATAN!!!!!! BROTHER I THINK YOU ARE STUDYING TOO MUCH ...AND UNFORTUNATELY THE CORRUPTED STUFF MORE...AND THATS NOT ONLY YOUR PROBLEM THATS THE PROBLEM OPF MOST SATANISTS....THAT THEY STUDY SOME CRAP AND BELIEVE IT .....BRO...SATAN IS THE BRINGER OF KNOWLEDGE ....AND AS YOU MEDITATE ON...

You are gonna bust ribs laughing at this video. Two Late night T.V. commentators rip on some christian T.V. evangelists. Have tissue ready cause your eyes are going to water from laughing so hard. Send this to all the christians you know. Here is the youtube link...