Which level of mind is often referred to as the "tip of the iceberg"?

The level of mind referred to as the "tip of the iceberg" is the conscious mind. This metaphor illustrates the idea that the conscious mind is just a small part of our overall mental processes, with much of our mental activity happening below the surface in the subconscious and unconscious levels. The conscious mind encompasses our current thoughts, perceptions, and awareness—essentially, everything we are actively thinking about at any given moment. It functions at a surface level, while the larger, more influential components of our psyche—the subconscious and unconscious—operate beneath, impacting our feelings, behaviors, and decisions without our immediate awareness. Therefore, the conscious mind being "the tip of the iceberg" is descriptive of its role in our overall mental functioning, highlighting that there is so much more at play beneath it.