autolimitarse

To restrict one's own actions, consumption, or ambitions voluntarily — used in contexts from dieting and spending to companies capping their own growth or output.

• Decidió autolimitarse a dos horas de pantalla al día. — He decided to limit himself to two hours of screen time a day.
• La empresa se autolimitó la producción para no saturar el mercado. — The company voluntarily capped its own production to avoid flooding the market.
• Autolimitarse en el gasto ayuda a ahorrar sin depender de terceros. — Limiting your own spending helps you save without depending on others.

Distinct from ser limitado por algo externo (being limited by an external factor) — autolimitarse always frames the restriction as the subject's own choice.

Often confused with limitar.