The six pillars of Sanatan-Dharma are: Truthfulness, Mercy, Charity, Cleanliness, Austerity, Spiritual Education.
Going to temples or chanting mantras or worshiping does not mean that one is religious or a good person. Being religious or a good person means having certain qualities. Having and developing these qualities is what makes one a Sanatani, a follower of the pillars of Sanatan-Dharma.
Truthfulness
Consistently telling the truth and being transparent in actions and words, being trustworthy in personal and professional relationships.
Empathy
One should understand and feel the pains of others. This is the basic definition of a vaishnava.
Kindness
Be generous and considerate without expecting anything in return, contribute to the well-being and happiness of others.
Responsibility
Be accountable for your actions and duties.
Patience
Control yourself and be tolerant, especially in difficult or frustrating situations. Be thoughtful in your responses.
Gratitude
Be grateful and appreciative for what others have done for you or others.