If you are already doing these things by habit, you don't have to represent them at all. If you need to be reminded, or need to track whether they're done, they can be repeating tasks in the @Work context (since you say you're using Outlook). You cross them off each day, and they automatically reappear the next day.

Only if they naturally fall out that way. I have separate @TrainAM and @TrainPM contexts because the set of possible action items is different -- I can't process the day's notes on the morning train, or plan the day's schedule on the evening train.

Think in terms of "workspaces". If you have to log in to some external system or bring up a specific application, and you don't stay logged in all day, that can be a context (I have @Quicken for personal bookkeeping). If you have to get into a certain mindset -- the way David talks about batching his phone calls -- that can be a context.

Sometimes I wind up nesting contexts -- for example, if there are bills to pay, I'll put an "@Quicken" task in my @Home context, to remind me to visit that context today.

Don't try to force every element of GTD in your work life, just yet.

The fact that you can do every task at any time at any location, does not necessary mean that you should. That is what contexts are for.

A context 'Phone' will help you categorize tasks that are to be completed by a call. This will help you do a burst of calls and be finished with it.

I am sure you have at least some tasks, that depend on the location you are at. Even if not business tasks (this e-business really makes you mobile) you can't do most of your shopping at home.

Or you'd set a '@Home' context for personal tasks, the ones you do after 5pm.

Arno answers:
1: I also feel that all these regular things( which I believe are not projects ) don't really fit into the GTD vocabulary. Usually I work far away and return home for the weekend only. Consequently starting from friday at home I have to go through very regular acitivities with goal 'get ready for monday morning' and during the week target 'get ready to drive home and have a proper weekend'. Friday evenings, usually in a car I do a 'debriefing' session where I speak all my positive and negative experiences into a dictaphone. Many of these issues result in 'rules' to streamline my regular half-weekly tasks like "don't do any shopping after 1100 on saturdays because it's too busy" or "it's good enough to wash this and that twice in a month". My project during this 'debriefing' session is to reduce frequency of regular activities(David Allen doubts it is healthy to check for email permanently) or to drop certain actions completely. From the control perspective the 'check-lists' live in my head alone.
2: It looks to me you have a project called "I need clean context definitions to trust my system' on your mind. Some sort of GTD of GTD level project. Here I would also recommend debriefing sessions. Try to remember in which circumstances things went well or wrong. As a 2nd consequence you narrow the contexts down to reinforce the outcome. Here's an example. Last summer I never found time to read a book I bought. Then I recalled the last time I wanted to read that book. I was on the beach late evening. This is how it got into a 'on-beach' context. You don't need a beach to read the book of course, but for me it helped. The on-the-computer context is usually too general to be of help. I usually have contexts 'mac-online', 'mac-very-long', 'mac-uinterrupted'. If this does not come naturally to you try to remember the situation in which you successfully completed a certain type task. If the result is 'computer-with-cappucino' then that's your new context next time.

This is an interesting merger of the context structure with the "getting into costume" idea also mentioned . . .

Perhaps by combining the contexts with the costume, you then increase chances of success, and make it easier to get moving. Even if, as you say, you don't necessarily need to be on the beach to read a book, just being able to get into something resembling that mental state can definitely be beneficial.