Longtime runner, first time high school cross country coach. Any advice?

I've loved cross country since running in high school, and I'm going to be the lead coach for a small high school cross country team this fall. I'd love to hear anyones' perspective on what they've learned about good coaching by working with their athletes.

To any current or prior cross country coaches:

• What do you wish you would have known in your first seasons of coaching XC?
• Or, what advice would you give to a new cross country coach?

Thank you in advance!