There are numerous books on time management, and I have read several of them. Some ideas are great and can be implemented right away. Here is one idea to get time under control:
Focus on the tasks that are most important first. It may sound overly simply, and it is, but it’s just not that easy. We are so distracted by all of the things that need our attention throughout the day, that it is easy to lose focus on what really counts. One way of doing what is important is to start on it first thing in the morning without letting any interruptions distract you. This way, you know that you will have accomplished what is important.