Daily Review - 15 mins/day
My daily review is actually about half an hour. I look at weather, review my calendar, review all my mext action lists and read what little new sI consume. When I'm done with my coffee I declare the news reading done.
Project Updates??? - assuming planning for your projects take more than the quick 15m/day
Most of my work has pretty well defined steps, can be planned days/weeks/months and even sometimes years in advance so I try to do the natural planning model on the projects when I decide to add one to my system. How much I go into with it depends. Some projects are very fluid and all I do is put the next action down and maybe an outcome. I don't do project planning every day, only when I add a new project or discover that my planning was inadequate either while working the project actions or at the weekly review.
Monthly Review - 2 hours/ month
I don't do a monthly review other than the standard archiving of calendar items and email messages from 2 years ago in the same month. That way I keep a rolling set of my most current stuff but have my archives to refer back to as I need them.
Quarterly Review - 2 hours / quarter
This is a big one for me and I spend a LOT more time on it than 2 hours. Typically I do my quarterly reviews starting on the equinox and solstices and I expect it to take about a week to week and a half spending at least an hour or 2 each day to get it all done. I swap entire sets of stuff out of my active project task manager system and into someday/maybe and make active a whole new set based on the season and what I can do. I have incorporated elements of a personal retreat, time to just think abuout higher levels, my areas of focus, guided questions to get me exploring where I am now and where I want to go. I have also included stuff from the 12 week year book about setting goals, leading and lagging indicators of progress, what I plan to focus on and the habits and tasks I will need to do to get it done. I do journals, write on some templates that I've found helpful, do the current version of a set of standard questions, review past quarters and in general clean my entire system to get ready for the next season. I've found that when I get ready to put a project back into someday maybe if I take the time to clean all the related files up then it's eaasier to get it going again when its season comes round next year. That includes both paper and digital files.
My winter solstice review which I am doing now also includes a lot of year end tasks, scanning and archiving past year papers that I no longer need in active storage, cleaning my hard drives and computer files. checking that my current backup strategy is god. Chaning passswords on critical places. Starting to gather tax items etc. Those things are all projects in their own right but they feed into the review because I see how I did last year and what I want tochange for this year. I try to select my focus word for the coming year before the 1st and usually write a few entries in my journal about the importance of my word and how I plan to incorporate whatever it means to me in the coming year.