Best practices for maintaining mental health while preparing for UPSC include establishing a structured study schedule balanced with breaks. Incorporating physical activities such as yoga or meditation can help manage stress levels. Ensuring adequate sleep and a healthy diet also contributes significantly to cognitive function and emotional well-being. Conducting self-care activities or hobbies outside of study time aids in relieving stress and preventing burnout. Additionally, seeking support from family, friends, or professional counselors when needed is vital for maintaining mental equilibrium.