How would you understand your mind?
One way of seeing it is that our conscious mind is comparable to a small lake while the subconscious mind is like a big ocean.
Like a small lake, the conscious mind is shallow and limited in its operating capacity. In contrast, the subconscious (big ocean) is deep and wide. What you may experience deep down the ocean is a sea of calmness and quietness. This is where the real inner power of our mind resides.
To tap into these power, you have to go deep into it.