Focus on what will have the largest impact on your productivity. Determining what time of day you are most productive, and which activities are most significant will help you to stay on track. Are you an early riser, night owl, or somewhere in between? Creating a daily schedule and routine can significantly improve your productivity. You will also want to keep in mind statistical data which points to the best times of day and days of the week for engaging in social media activity.
Source: Ashley Zeckman, Top Rank Blog