Replacing the brake light switch, where is this switch? on 2002 Honda Civic

Husband has cancer, wife is solo to take of replacing the brake light switch for a 2002 Honda Civic. Where is the brake light switch located and is it easy for me to do this repair?

Please respond,
Thank You, Janice Todd

on the brake pedal under the dash. get the new switch and compare and see if you want to attempt it.