Your subconscious is vast and powerful, therefore you must be aware of what you consciously let into it.
This idea is set forth in The Master Key, but even if you never read the book, it’s obvious in daily life.
For example, I often find that after I watch a movie, I find myself replaying entire scenes with great accuracy and detail on ‘my mental screen’.
Did I consciously memorize this entire movie, as one would with a set of multiplication tables in elementary school?
Well, no, not consciously. But it is quite possible that the entire movie is imprinted onto my subconscious, even if I cannot recall it word for word on demand.
Following along the movie theme, but of course acknowledging that there are many, many other forms of content which imprint onto our subconscious, including negative self-talk, what we repeatedly permit over and over again will begin to form patterns.
And so if you watch kung-fu movies over, and over, and over again, you’re probably going to be walking around, thinking quite often about … kung-fu. You’ll be doing this thinking while you’re not watching those movies, and perhaps while you should or could be thinking about about something else.
Now, remember that I began by stating that your subconscious is vast and powerful.
I did not say that it was only capable of harnessing and magnifying negative energy.
In fact, it’s quite the opposite.
Your subconscious is vast, powerful, and capable of helping you manifest whatever energy you consciously direct into it.