As soon as you start awareness training with the idea that you want to lucid dream, you're not "doing nothing" to lucid dream.

And yes, check just about every single source including the Tibetan Yogas of Dream and Sleep: building *very strong intent* is critical to success in lucid dreaming.

IMO the problem with not journaling, (you don't mention how your recall is) is that keeping dreaming on your mind shows your subconscious that it is important to you. Lucidity IMO (this is from Sensei) takes two things: being aware of your state, and being aware of and in your dreams (in essence, having good recall).

I'm (partly) with Seltiez on this: it takes a very strong determination to do all that you can to LD in order to succeed as a non-natural, I believe. Strong intent is absolutely part of that: (one way this could be: very important goals [like waking up on time so you don't miss your flight] stay highly activated in your goal seeking center even while asleep -- setting strong intention to do something is making a very important goal in your goal seeking center of the brain).

And let me just say: reaching the high levels of LDing success and being lazy do not go hand in hand... If you're happy with the once-in-a-while LDs, then great...