What is your advice for being a great NCO who commands the respect of seniors, peers, and subordinates alike?

I like to look toward some of the greats for inspiration. Here are a few I live by:

“Regard your soldiers as your children, and they will follow you into the deepest valleys; look upon them as your own beloved sons, and they will stand by you even unto death." - Sun Tzu

"No one cares what you know until they know that you care." - Teddy Roosevelt

Be present.
Be approachable.
Be right.
Listen to understand.
Create a leader book--use it, and keep it updated.
Be just as quick to counsel a Soldier for something positive, as for negative.
Understand it's never you against the Soldier, it's the Soldier against the standard%requirement/task.
If you screw it up and your Soldiers get caught short--own it with your Soldiers. It's okay to say you f'd it up.
When your Soldiers f-up make it a learning event, not a firing squad moment.
Get a TM for every item of equipment in your inventory--read them--use them while performing/supervising PMCS, insist your Soldiers do the same
Be a SME on every item of equipment in your inventory.
Crawl under, over, and around every item of equipment in your inventory. Have the operators do the same.
Verify all deficiencies, and track maintenance efforts. (Have the operators do the same).
Be the SME on all of your TTPs. (Have your Soldiers do the same).
Get a copy of squad/platoon/troop-company SOPs/TACSOPs, and walk through each step. (Have your Soldiers do the same).
Read every AR, DA Pam, and FM related to leadership, command, awards, uniforms, weapons, physical training, NCOERs, counseling, leave, promotions, and 19D related, then read them again.

Always lead by example. Be with your soldiers and dont just sit at your desk while they are out pmcsing vehicles. Avoid having your soldiers doing things that you havent done before or would be unwilling to do yourself. Don't be a yes man, follow orders, achieve the missions, but dont volunteer your soldiers for dumb tasks. Your soldiers most treasured asset is their personal time.