How do you trim a peace lily to promote healthy growth and maintain its appearance?

To trim a peace lily for healthy growth and appearance, use clean, sharp scissors to cut off any yellow or brown leaves at the base of the plant. Remove any dead or wilting flowers by cutting them off at the stem. Trim back any overgrown or leggy stems to encourage new growth. Make sure to water the plant regularly and place it in a location with indirect sunlight for optimal health.