Mindfulness practices can help you mentally take care of yourself by reducing stress and just overall promoting your health.
Mindfulness practices can include:
painting
reading
journaling
drawing
meditation
watching the sunrise/sunset
unplugging from screens and social media
practicing diaphragmatic breathing to help you focus
The key to practicing mindfulness is to be present, focused in the moment and non-judgmental towards yourself. For this to be effective towards your self-care you should integrate a couple of these into your daily routine.
Figure 1.2. Word cloud. This image is a word cloud that have a ton of words that surround mindfulness and self-care. (Image credit: Sarah Fogle).