Maybe obvious to some, maybe not so obvious to others including me:
although I do dream lucidly on a more or less regular basis, I was kind of lazy writing down my dreams into my journal for quite a while. In a recent hypnopompic phase, the question came up regarding why there is such a strong connection between the act of writing dreams down and being able to remember more dreams and finally becoming lucid more often.
What came up clearly as a response to this question was an immediate intuitive understanding that the answer is my non-conceptual relationship to dreams, which is cultivated by those activities.
The more one enjoys dealing with one‘s dreams, writing them down, reading the notes, the more one changes one‘s appreciation of the activities of the substrate mind.
I noticed that my attitude towards the substrate mind displays changed slightly towards a more quiet, curious, passive and more appreciative quality as compared to a previous more active quality of observer.
I realized that a stable, longer lucid dreaming experience has clearly to do with the deepening practice of adopting a vipashyana state having qualities of stillness/stability (which includes passivity to involuntarily reacting to sensory inputs), curiosity/appreciation for the experience and brightness of attention.