I'm afraid you were duped into making the worst admission you could have possibly made: using countermeasures to influence the outcome of your polygraph examination. Your admission to having used polygraph countermeasures will be shared with other federal agencies, and you are likely to be blacklisted by them, too. What agency wants to take the risk of giving a security clearance to someone who admitted trying to beat the polygraph?

It's worth noting that the behavior you admitted to is nothing that anyone with a basic understanding of polygraph procedure and countermeasures would do. But it's typical of the so-called "confirmed countermeasure" cases being recorded by federal agencies such as the Defense Intelligence Agency and U.S. Customs and Border Protection, with respect to which see the following recent blog posts:

https://antipolygraph.org/blog/2015/04/18/leaked-documents-point-to-dias-inability-to-detect-sophisticated-polygraph-countermeasures/

https://antipolygraph.org/blog/2015/05/05/on-eve-of-polygraph-trial-leaked-case-files-contradict-cbp-polygraph-chiefs-countermeasure-detection-claim/

I think it is absolutely disgraceful that federal polygraph examiners are characterizing commonplace mental activity such as that in which you engaged as "countermeasures" and using that to pad their stats while destroying the career prospects of innocent test-takers. Polygraphers engaging in this sort of conduct should be ashamed of themselves.