In my last episode, I was floating toward a wall and all these thoughts were firing, "you're in a dream", "you'll go through the wall", "don't be afraid" but the rational side that felt like I was going to slam into a wall freaked out just at the wall & I woke. I still wish I just let myself slip through the wall..
You might find the dream dictionary[1] interesting.
If you have nightmares, lucid dreaming techniques can be helpful for overcoming them. People often make stressful dreams worse on themselves by worrying “What if the monster catches up to me?” or “What if my weapon doesn’t do anything to it?”—you’ve got to follow it up with “Nah, I think it’s friendly and I can ride it” or “Of course my attack will work”.
For me it was gaining a better understanding of basic physics. Something I was never taught at an early age due to a cult like upbringing. Now questioning all I have ever been taught is second nature in my waking life. Even basic things like was that shadow normal? "Oh right, nothing divine there." So now that has leaked into my dream state, whenever physics goes weird (mostly water not flowing right or objects that don't respond in a proper manner) I instantly question it and then become aware of my dream state.