Should have a strong aim/goal.
Should have a determination to achieve that goal.
Should work hard with strong commitment and concentration.
I am fascinated by Vivekananda from my Childhood. The ethics and morality taught by Teachers and Parents. It is to do whatever you do, do it perfectly, Sincerely and Dedicate all your energy on it. There is nothing impossible in this world.
Our jobs are little Secretive in nature unlike IAS and IPS. We cannot share more in Public Platform. Our nature of service is as such.