Do your very best on every task. Imagine that everyone is watching even when no one is watching.
Never assume you understand. Ask the questions.
Your ability to work with others on a complex task is a critical skill for advancement at work.
If you get up by 6am, exercise, plan your day, and start on your biggest task, then your whole day is different. If you do this regularly it becomes a habit.
After every difficulty, ask yourself two questions: 'What did I do right?' and 'What would I do differently?
Do your own market research; ask your last ten customers exactly why they bought from you.
Follow up and follow through until the task is completed, the prize won.
The fact is that you can't do everything that you have to do. You have to procrastinate on something. Therefore, procrastinate on small tasks.
Simplify the task. Continually look for faster, better, easier ways to get the job done.