(Disclaimer: not all of these I agree with.)

• Procrastination
• Multi-tasking
• Not removing distractions/time-wasters
• Not keeping the big picture in mind
• Being a perfectionist
• Not having a work routine
• Not delegating
• Being overloaded with information/options
• Having a huge to-do list
• Saying “yes” too easily/too often
• Daydreaming
• Not automating recurring tasks
• Being indecisive
• Waiting for the “right” time to work
• Over scheduling tasks
• Spending too much time planning
• Sitting at your desk all day/never taking breaks
• Over-checking email
• Refusing to learn new skills
• Watching TV right after work