In that the more you long for it and pursue it, the less likely you are to experience it?

I know it's only been a month now, and I've had some pretty surprising success with plain-Jane dream recall, but, I'm growing concerned that the more I pursue this goal, the less likely it is to just "happen" for me. I've managed to recall and make into a journal, ten dreams so far. Each one has gotten progressively longer and more detailed. Despite night-time mantras of "I will realize I am dreaming", I've yet to experience even a trace of lucidity. Any advice from the more experienced?

If it matters, I'm 60 years old, in very good health, and have a well-developed ability to suggest to myself a time to wake up, which I can nail practically to the minute. That was why I was hoping the aforementioned mantra would produce results. So far, no joy...

Thanks in advance.

Frank