The peaks and valleys of life are impossible to predict, so it's important to plan accordingly. Prepare an emotional first aid kit to help you navigate the challenges of life in a healthy way. Fill the kit with things that bring you joy, remind you of what matters to you, and provide you some kind of grounding or comfort.
Self-care isn't one-size-fits-all, you need to develop an understanding of what it is that restores you. And contrary to popular opinion, whatever it is, it doesn't have to be expensive.