Allow me to preface this post by saying I am not a huge fan of organized religion. In my lifetime, I have noticed the distinct trend of people who most loudly proclaim and publish their church attendance and their personal holiness as being those same people who are mostly likely to betray, stab their fellow man in the back, and use that same religion to judge and belittle other people. That is not my personal opinion of a spiritual being.
Most religions, whether Christianity, Islam, Buddhism or Wicca, hold the same premise of the Golden Rule. "Do unto others as you would have them do unto you." Sounds pretty simple, doesn't it? Wicca takes it even further by decreeing that whatever action you take toward another person will be returned threefold upon you. That applies whether that action is helpful or harmful. Makes you stop and think, doesn't it?
Your spiritual self-care is an extremely personal matter. It may, for one person, include praying in an official church each Sunday. For another, it may involve a determined effort to treat all who cross their path with kindness and compassion. A third may find their spiritual self by spending a few quiet moments in nature.
However you find your spirituality, it takes a commitment of time and deliberate action. Your self-care in this are begins when you resolve to take that time for that purpose. Like any other type of self-care, you will reap the benefits of the effort you invest.