Hmmm... interesting points brought up here.

OP. You have tried all of the techniques in a year? I would recommend sticking to a single technique for recall, awareness, and a good sleep schedule, it will come if you are persistent. You will reap what you sew, but if you are sewing in a thousand different fields, you won't have time to reap. I see that you have "DJed", I recommend using a DJ with the end goal of not having to use a DJ.
http://www.dreamviews.com/dream-sign...m-journal.html
This is designed to teach you how to find out what techniques work best for you. Find them and stick to them.

Everyone else, are non lucid dreams a failure? no.
why not? because there is something below them.
We shouldn't be concentrating on our failures but our success, we know what makes us not have dreams and not have lucids, it is what we were doing before we started LDing, what everyone else in the world is doing. Studying failure will lead to failure.

A dream is a step in the right direction, an aware dream even more, a lucid is the mark. Missing the mark isn't failure, but a testament to how far we still have to go.