For many, the COVID-19 pandemic reinforced just how important mental health is for overall wellness. Rather than some intangible aside, it’s a critical element of physical health. You might even call it fitness. Referring to mental-health care as mental fitness creates a powerful mindset shift. It puts us in a proactive state and gives us the autonomy to improve it. And just as we build and preserve muscle with physical training, we can develop and sustain mental fitness by regularly training our brains. Start with these 12 steps.