You probably have tasks written down on your desk, in your calendar, in documents and email and maybe even on your mobile phone. The first step is to consolidate all of these tasks into one simple list.
With all of your tasks in one place, prioritize them by moving the most important tasks to the top and the least important to the bottom. In this way, you can work from top to bottom in your list knowing that you are always working on the right thing at the right time.
With a clear view of all of your tasks and their priorities, you now need to estimate how much time it's likely going to take to complete each task on the list. So write down the effort needed for each and try and make it as realistic as possible.
At the start of every day, update your schedule by marking the tasks you've completed and re-forecasting the tasks you still have ahead. Only then will you know if you're on track.
Your team will want to know what you are working on and when it's likely to be completed. So share your schedule with them, helping them to keep informed along the way.