With semi-abstract topics like this, it's impossible to give concrete, step-by-step, no-fail directions, but you know that already.

I can relate to your failure to recognize dreamsigns; even though I've been lucid dreaming for years, I still miss some VERY obvious ones, and kick myself in the morning. LOL

You've probably already tried this, but ........on a weekend, or some other time when you don't care whether you miss a few hours sleep, set your alarm for 1 or 2am. When it goes off, turn on the light, and do some task that requires mental alertness (reading is best for me) for a half hour. Set your alarm for an hour later. When it goes off again, turn the light on, read, and again set it for an hour later, and go back to sleep. Repeat this until you have to get up. Hopefully during one of these sleep sessions, you'll have some lucidity or at least something akin to it. I think that by waking up multiple times in one night, it maximizes the chances of lucidity by confusing the brain as to whether it is sleeping or awake. I've found this to be the most effective way of inducing lucidity.

I hope this helps you, and I commend your resolve!

Email me if you have any other questions that you think I may be able to help with!