Early in the morning when I woke up I go for walking, while walking usually I think about what is to be done on that day, I also maintain a dairy in which I write all the things that are to be done in that month, thats how I plan.
With my electronic calendar as the medium, my day is typically planned one, sometimes two weeks in advance. However, as circumstances change flexibility is not only crucial in helping me adapt but also to maximize effort and time in completing those daily tasks.
I always plan my day after arriving at the office. First I checked the pending tasks(if any) from the previous Day and then i spend around 30 mins to list down and prioritize the tasks according to their importance. This help me focused and always on my edge for the whole day.
I also plan the routine or recurring tasks that need to be done on daily and weekly basis. Outlook provides a v nice user interface to work with this kinda scheme.
I always plan the things for tommarow just the end of previous day ,so that i can make available the resources which are to be utilizes a day ahead ,which saves lot of time and we can go ahead with the planning.