Happy New Year fellow Sparktricians!

I sort of became a de-facto project manager when I hired on to the company I now work for.
Seems that I had more experience/knowledge on fire alarm systems than the other journeymen.
Though it was in the middle/end phase of a huge job (1.2 million square feet) and a lot of details and headaches, I sort of took over as both a project manager and lead with the presidents/owners blessings.
The question I put forth to all sage readers of this forum is:
"What pearls of wisdom and advice would you impart to someone who wishes to become a project manager?"
I appreciate any advice you could share!
(except the advice to screw yourself, I already have a screw gun, thanks)
Thanks,
Brian