First off, if you feel you don't have exceptional time management skills, it's not just you. Most people struggle daily to juggle between career and family, while still trying to find time for themselves. That being said, the most common causes of poor time management are The major causes for not managing time very well are absentmindedness, procrastination, ineffective delegation, being reactive instead of proactive, lack of clear plan, inability to prioritize. Many times such behavior can be caused by depression, lack of proper nutrition and lack of good night's sleep.