From 'Sitting Buddha' by R.M. Daishin Morgan
When sitting, just sit; when working, just work. In other words, keeping your mind with what you are doing is the key. This is often referred to as mindfulness training. It can gradually encompass all your activities. You can only do working meditation if you are prepared to totally do what you are doing. If it is good to do, then it is worth putting your whole being into it; if it is not good to do, then don`t do it. This is the key to a full life. However, as in formal meditation, don`t try and be aware of yourself being mindful. Notice that if you do that, you are trying to be two people - the one who is working and the one who is watching the worker. I find it is best to assume you are meditating, whatever you are doing, unless you see that you are not, in which case bring yourself back to the job in hand. It is easiest to learn this doing simple things - walking to work, cleaning round the house or weeding the garden.If you get very scattered, it helps to stop for a moment and stand or sit still using the method for grounding yourself described in chapter two. Don't get cross and scold yourself; that only adds to the problem. When you notice that your mind is wandering, you have already come back to your self. At that moment, the key is to be willing to let go of whatever you are thinking about and be with the job in hand. It is a fallacy to believe that repetitive jobs are made easier by being somewhere else in your mind. All that does is take away your life. You can help yourself enormously by doing only one thing at a time. Turn the radio off when you are reading or eating; when listening to music, give it your whole attention, don't use it as an anaesthetic. Repetitive work is a particularly valuable meditation practice. Although you may have ten things needing doing, you can only ever do one at a time, even if you move between different jobs very quickly.

It helps to guard your senses to some extent. For example, when standing at the checkout in a supermarket, don't let your mind glaze over; keep your attention focused. You may notice the magazine racks and their headlines - they are deliberately designed to distract you - but you don't have to play the game. It is a very good place to do standing meditation.

Keeping your mind on what you are doing applies to enjoyable activities as much as to anything else. It is good to enjoy things. The life of practice involves dedicating oneself to the good of all beings, and we need to remember that we are one of these beings. If we don't take care of ourselves, it is all the harder to keep going. Some time to relax and renew helps to fulfil our purpose. Zazen should increase our ability to enjoy whatever opportunities life presents. Interacting with others is a vital part of training. It is the place where we can see ourselves in a way that we may never succeed in doing if we only sit in meditation. It reveals all those elements of the self that need working on more directly than almost anything else. So don't be so stiff you cannot enjoy a joke with your colleagues. We are far more visible than we often imagine, yet we try to cultivate a front that hardly fools anybody. There is a huge relief that comes as we begin to let some of this go.
"Sitting Buddha"