Being sensitive follows an inverted U-curve.
Only up until a certain point does it make your life richer (you notice more nuance, beauty, meaning, atmosphere, moods). Beyond that, it becomes a retreat into yourself. You're not actually feeling more things. You're just experiencing yourself.
The senses offer a useful analogy. Imagine the person who has such an impossibly strong sense of smell that he can smell his own nose. Or the one with such hyperacuity he can see even the cornea of his own eyes.
However, once the nose becomes perceptible to itself, its own smell would become the dominant odor in the olfactory field. Because it sits at the source of smelling itself. Likewise, in the same way that ringing in the ears can drown out all other sounds, if the cornea were visible to the eye, it would partially obscure everything else we see.
So every faculty has a point past which more intensity stops increasing contact with reality and instead starts interfering with it. In fact, a faculty works best when it disappears into its object.
Being excessively “sensitive,” although often romanticized, can turn you into an accidental narcissist, insistent on pointing the perceptual “camera” at yourself, when in reality it should be turned outward, in search of the hidden wonders of a world beyond (and greater than) you.
In this way, you have to let go of your eyes to see. Let go of your emotions to feel. Let go of yourself to be.