Imagine this:

You are floating on warm, silky water. You hear nothing but the slow, steady beating of your heart and the sound of your own breathing which is getting deeper and deeper.

As you begin to relax, the restless chatter of your mind slows, then stops. Luxuriating in the release from gravity, every tiny muscle in your body lets go.

The stresses and strains of daily life are left behind, you become calmer and calmer, more and more relaxed. You feel yourself dissolving into the warm, silky water; boundaries melt away, inside and outside become one and the same. You drift lazily through infinite space. Completely safe. Absolutely free.

This is floating.