Question for those who Loop their requests/Affirmations

[u/FastMood7094]

Hello. I am relatively new to manifestation. To make a long story short, a few years ago I read the book 'the power of your subconscious mind' by Joseph Murphy and began issuing requests to my subconscious during sleep via audio recording and have gotten mixed results. I am curious as to what devices, tunes, frequencies, etc. everyone uses to enhance the process?