The conscious mind is the part of your mind that is responsible for logic and reasoning.
The conscious mind also controls all the actions that you do on intention while being conscious.
The conscious mind is also known to be the gate keeper for the mind.
If someone tried to present you with a belief that doesn't match your belief system
then your conscious mind will filter that belief.
The subconscious mind is the part of your mind responsible for all of your involuntary actions.
Your breathing rate and heart beats are controlled by your subconscious mind.
Your subconscious mind is also the place where your beliefs and memories are stored.
That's why affirmations make no sense and can never improve your beliefs.
Affirmations are done on a conscious level and are always filtered by the subconscious mind
because they usually don't match your belief system.