These things are relevant regardless of whether it's EM, TL or Staff. Or even senior eng?

Time management

It gets harder to prioritise. Work on what matters

Avoid snacking, unless it's for your mental health

Funny enough, snacking is bad for physical health. Or perhaps too much Snacking?

Avoid preening

Find what matters

This reminds me of Work is doing what someone else wants.

If you have enough influence and energy, you can make the company care about something that you care about.

From Work on what matters.

Teaching a company to value something it doesn’t care about is considerably the hardest sort of work you can do, and it often fails, so you should do as little of it as you can, but no less. As a senior leader, you have an ethical obligation that goes beyond maximizing your company-perceived impact, but it’s important to recognize what you’re up against and time your efforts accordingly.

much more important is the sort of work that simply won’t happen if you don’t do it.

This work is an intersection of what you’re exceptionally good at and what you genuinely care about.

If you spend your career snacking, preening or chasing ghosts, it’s possible but relatively unlikely that what you’ve done before will be valued at companies you interview with. Instead, the only viable long-term bet on your career is to do work that matters, work that develops you, and to steer towards companies that value genuine expertise.

Business view

At that level, especially director+, you need a good business/product perspective.

Reflections on being senior plus