In regards to Pagan and Wiccan self-care, it's possible that author Arin Murphy-Hiscock said it best:
"At its most basic, engaging in self-care is about self-respect. Self-care is all about taking care of yourself, making that stand and declaring that yes you are important, you do matter. Simple self-care is part of your efforts to be the best person you can be- an idea that resonates in magic as well. Magic is an ideal partner for self-care: one of magic's main focuses is healing- healing of the self, healing of the earth, healing of humanity and nature. In this sense, magic and self-care go hand in hand."
In addition to soothing incense and candles, charms and spells for soothing, calm, healing and tranquility, consider engaging in meditative acts, and slowing down to root yourself in moments which heal and nourish you.