The nose pinch RC used to be my primary RC as well. After I first read about that on the forums I thought it was a great idea and really wanted to try it. Before that I never did the standard type of RCing, in my younger days all it would take is for me to get myself to think about if I was dreaming in a dream and I'd get lucid. But I've since had many a lucid dream I would not have had if I was not using the standard RC's in dreams when I needed to. And it's good, I think, to have a primary and secondary RC method as backup.
Anyway, I had started doing the nose pinching and trying to breath so obsessively in waking life that all of a sudden one day, it quit working in my dream. My mind started simulating being unable to breath through a pinched nose in my dreams. It was highly disappointing it had been working for me so well for a long time. It took a lot of work for me to retrain myself to start using my watch as a primary RC. I kept trying and trying and just couldn't remember to use my watch I my dreams but I was determined and wouldn't give up. And I eventually came up with the idea of practicing doing the watch RC after becoming lucid to try and get myself used to doing it in my dreams. And that actually worked... Yay.
So now I'm a firm believer in practicing doing RC's after becoming lucid as a way to both get used to doing them in dreams and to be familiar with how they work/the results of the RC.
As for my deeper goals for dreaming, aside for the sheer joy of the experience. And if I can get myself back to at least somewhat regular lucidity. Is to get back to the experiments I had just begun before events took me away from my dreaming practices. I'll just throw it out there.
I wanted to start trying to become more aware of my own symbolisms. I use my thoughts to focus my mind a certain way in order to gain a better awareness, and to create the experience of becoming lucid in a dream. But so often once in a dream, lucid. All that thought control practice and awareness meditation goes out the window and I just have fun reacting to in dream events and playing in the world. And in doing so, not paying much attention to how or why those events are happening. (Which there is nothing wrong with doing of course. Got to have some fun too...

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But I was thinking about it, and I came up with this theory. At least this idea I wanted to experiment with and see what I could do with it. To try and start controlling my thoughts and emotions more in my dreams as I'm always working on doing in waking life in order to create the event of a lucid dream. And just try to observe what is happening to the dream with my changing thoughts and emotions. Try to be more aware of what is happening, rather than just reacting to everything that is happening.
To see if I can become more aware of my own symbolisms. And see if I can be more aware of how and what and why I'm creating as I'm creating it. I had this idea, that when we just blindly react to all the events taking place in our dreams. It's kind of like dreaming backwards since we are causing those events that we are reacting to. And our reactions and thoughts about what we are reacting to, changes events so smoothly we hardly notice we are doing it, and we then react to those new events as they happen... If you understand what I'm getting at... So I'm thinking maybe I can slow my damn mind down in my dream, instead of just reacting to everything that is happening. Just experiment with being more aware of what is going on in my mind, and watching how the dream changes to the things going on in my mind. And maybe gain a better awareness of myself and what I'm doing... If it's even possible, but it's just something I want to experiment with and see what happens.
But of course, before I can even think about getting into that stuff, I need to be getting lucid at least somewhat regularly again. So first things first...