TO THY OWN SELF BE TRUE
You will see so many instances of the primary meaning / reading of this kanji, that you may forget all about an irregular (but important) on reading. Below are some examples of words based on the “self”-related JI / mizukara readings, as well as some words based on the SHI reading. The SHI reading is the first component of the Japanese word for nature, shizen 自然.
JI / mizukara- ("self") based words:
自然科学（しぜんかがく） the natural sciences