Exalted, debilitated, own sign: what dignity means

Every planet has a sign where it's at its best (exalted), one where it struggles (debilitated, always the opposite sign), and signs it rules (own sign, where it's at home).

The exaltations: Sun in Aries, Moon in Taurus, Mars in Capricorn, Mercury in Virgo, Jupiter in Cancer, Venus in Pisces, Saturn in Libra.

A debilitated planet isn't a broken one. Classical texts list several ways the weakness is cancelled, and many people with a debilitated planet end up unusually skilled in exactly that area, because nothing came easily there.