The mechanism by which body image interferes with sex is more specific than “feeling bad about how you look.” It’s attentional, and knowing that changes what to do about it.
Spectatoring
Masters and Johnson named it decades ago and the term has stuck. During sex, attention leaves sensation and moves to a third-person view of yourself — how you look from that angle, what is visible, what your stomach is doing, what your face is doing.
Two things follow. You aren’t feeling much, because attention is a finite resource and it’s being spent on surveillance. And the version of yourself you’re watching isn’t what anyone in the room can see — it is an internal image, assembled from your worst assessments.
So the problem isn’t that you look a particular way. It’s that you’re watching, and the watching both removes the sensation and generates the distress.
The behaviours it produces
Lights off, always. Specific positions avoided. Keeping clothing on. Holding a particular posture through something, which is exhausting and prevents movement. Avoiding being on top, or being looked at. Avoiding sex altogether at certain weights, or after eating, or in daylight.
Each of these makes an occasion tolerable and confirms that the body is a problem to be managed —the same safety-behaviour structure as in anxiety, and it maintains the fear the same way.
What actually helps
Attention training, deliberately. The intervention isn’t liking your body. It’s moving attention from the observing position back into sensation — where you’re being touched, temperature, pressure, weight, breath.
This is a practice rather than a decision, and it responds well to the underlying interoceptive work. Expect to have to return attention hundreds of times, and expect that to be the exercise rather than a failure at it.
Say it out loud once. Naming it to a partner — that you get self-conscious, that you disappear into watching yourself — is disproportionately effective. Most partners had interpreted the behaviour as disinterest.
Reduce the safety behaviours gradually. One at a time, agreed in advance. A lamp rather than the overhead light. Ten minutes without the shirt. The point isn’t exposure for its own sake; it’s discovering that the predicted reaction doesn’t occur.
Touch that isn’t evaluative. Structured non-goal-directed touch, taking turns, with no outcome, is a standard sex therapy exercise for exactly this and it works by breaking the performance frame. More on that.
What doesn’t help
Reassurance. A partner saying you look wonderful produces relief for a few minutes and teaches you to need it. It is the same loop as any other reassurance-seeking, and partners frequently find themselves saying it several times a week with no cumulative effect.
Waiting until you feel better about your body. The most common plan and the one that reliably fails, because the avoidance is what maintains the fear. The order runs the other way.
When it’s more than body image
If it dominates hours of your day, drives eating behaviour, or is fixed on one specific feature you examine repeatedly, that may be body dysmorphic disorder or an eating disorder. Both need licensed treatment rather than intimacy work.