1. Show up on schedule, utilizing the company provided transportation.
2. Take the time you need to get things done in ops and at the gate.
3. Release the parking brake only when both of you are fully ready.
4. Those days that you don't meet departure time, take the phone call when/if it comes.

Safety (and your ticket) should not be based on some average number for each and every flight. Unfortunately, I've been around long enough to know that it often is. Sometimes, some of us are our own worst enemies.