Focus on the 10% of your activities which drive most of the value. Relentlessly.
Do the right things over and over again. Consistency forms habits. Habits make hard things effortless.
Don't bullshit yourself or others. Apply brutal honesty and transparency to everything you do.
Meetings come in only two forms: Standing or social. If it's social, it's over breakfast, lunch, coffee, dinner or drinks. If not - don't sit down.
Don't let others wait for your part of the job. Ever.