Know What's Important. The simple version of simplifying is "Identify what's important, and eliminate the rest".
Limit Tasks. Each morning, list your 1-3 most important tasks. List other tasks you'd like to do. Say no to some of them. See if you can limit your list to 5-7 tasks per day (not counting little things, which you'll batch). Limiting your tasks helps you focus, and acknowledges you're not going to get everything done in one day.
Read the full list on Zen Habits.