If you want to be undefeatable, this Nakshatra, Uttarashadha, holds the secret!
To be undefeatable, have no enemy. Bring all diverse powers and forces and people together to serve a common objective.
You will also need 10 virtues, the 10 Viśvadevas (Divinities of Uttarāṣāḍhā): attention, substantial goals, method, expertise, detail, patience, action, lament, and rejoicing. You cannot succeed with only action but no patience, nor visa versa. And most of all you can not succeed if you are afraid of pain, suffering and lamentation.