How to become a good leader and how to handle undermining subordinates?

[Fantastic33]

I am designated as head of our unit few months ago, and i dont know how to become a good leader since it was my first time to be a boss. All im doing is do the best within my capacities and doing my work based on the scope of my designation..Also im too young from my subordinates and most of them used to undermine me because of my age. They usually dont follow my instructions and i know they think im not the right one to be on that position because im not smart enough and also not a graduate from prestigous university here in our country.

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[1714989935]

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[althedge]

Work hard and lead by example.
Set high standards.
Communicate clearly and efficiently.
Be fair but firm with decisions