Every sign has a default behaviour and a default depletion. Self-care, astrologically, means refilling what your sign tends to spend.

Fire signs — refill rest

Aries, Leo, Sagittarius burn energy publicly. Real self-care for them is doing nothing, alone, for an afternoon a week.

Earth signs — refill play

Taurus, Virgo, Capricorn over-work. Their self-care is unstructured fun — they will resist it the most.

Air signs — refill body

Gemini, Libra, Aquarius live in their head. Their self-care is anything that uses the body — yoga, walks, dance.

Water signs — refill boundaries

Cancer, Scorpio, Pisces absorb others' moods. Their self-care is solitude, water and a clear no.

Read your full chart in the natal chart.