How can I get my cat used to a harness?

To get your cat used to a harness, start by introducing it gradually. Let your cat sniff and explore the harness before putting it on. Then, try putting the harness on for short periods of time indoors, offering treats and praise. Gradually increase the time your cat wears the harness and practice walking with them indoors before venturing outside. Be patient and consistent in your training to help your cat feel comfortable and secure in the harness.