What is your greatest piece of advice for first time Captain upgrades at United?

United has thousands of highly experienced pilots retiring in the years ahead. With new hires likely soon to be on an accelerated track to the left seat, now more than ever, mentorship and transfer of knowledge is critical.

For those that have United Captain experience, what is some advice you’d give to someone now upgrading? Something you wish you’d have been more prepared for or someone would have told you before moving to the left seat?

I’m not confident there won’t be thread drift and infighting about the TA, but maybe there could be some nuggets of solid info here for junior pilots aspiring for the left seat.