I think it's rather that you hear your own voice, so you trust it more. Not sure if I explained it right, but I read it somewhere when making your own subliminals so I'm guessing it can apply to affirmations as well. Regarding to LOA, if you are going to visualize or affirm something, you have to be in a non-resistant place emotionally, I guess that's when subconscious accepts it the most. But affirmations that you don't believe to be true can cause instant resistance except if you are in a theta brainwave state, really relaxed and rather positive (which can be quite challenging to accomplish sometimes).
Why I think in overall a program would work better is because you can only repeat as many affirmations and when you stop there are so many more beliefs that might not have completely disappeared that can later set you back to when you started. To bypass the subconscious mind when affirming consciously constantly you would have to be in specific state every time to affirm, while as with a subliminal program it doesn't even involve the conscious mind so the effects start to show from SUBCONSCIOUS first and then you will see them on a conscious level. For example things regarding the subliminal start going your way and then you will realize that hey, I am those things the subliminal is telling me.
Affirmations are the other way around, you have to believe them consciously first for them to have any strong effect on the subconscious. But I think this one can be more unmotivating to some people because even if they think they believe it, they will fall short until the subconscious accept that truth.
Why I think in overall a program would work better is because you can only repeat as many affirmations and when you stop there are so many more beliefs that might not have completely disappeared that can later set you back to when you started. To bypass the subconscious mind when affirming consciously constantly you would have to be in specific state every time to affirm, while as with a subliminal program it doesn't even involve the conscious mind so the effects start to show from SUBCONSCIOUS first and then you will see them on a conscious level. For example things regarding the subliminal start going your way and then you will realize that hey, I am those things the subliminal is telling me.
Affirmations are the other way around, you have to believe them consciously first for them to have any strong effect on the subconscious. But I think this one can be more unmotivating to some people because even if they think they believe it, they will fall short until the subconscious accept that truth.