Background: The most important thing is that you wash your hands correctly. See this link for more details.
Once those details are committed to, we can move into an attitude to have about hand washing. (It was this amazing podcast that helped me to see this, by the way.)
There is something to be said about having a regular return to the here and now through out the day. Christian Monks had a Liturgy of the hours which called them to their prayers periodically. Zen Buddhist teachers are known to periodically strike novices to bring them into the present while meditating. Some people like periodic chimes to help bring them to the present. Mindfulness and Celtic Traditions both would have us identify common occurences like walking through a threshold as an invitation into the present.
In this time, when suddenly we are washing are hands as frequently as we should have been all along, we have a rather convenient and regularly occurring event that we might use as our gateway into being here, now. Each time we wash our hands, we could pass those twenty seconds singing “happy birthday” or whatever. Or we could use it as a time to fully in those moments.
What is even better is that this is an act of self care, an act of affirming our body, an act that carries sensory experiences with it. Just as we might focus on the feeling of the air right below our nostril as we inhale, we might locate our full attention on the soft, sudsy warmth flowing over our hands. Our senses– including touch– do not have the ability to regret the past or worry over the future. This is why tuning into to sensory input is such a centering practice.
Whatever you do, please just make sure you passed the full 20 seconds!
Each time you wash your hands, simply be present to that wonderful moment. Tune into the temperature and percussion of the water. Feel the soapy slickness as the lather works up. Try and find something new about this experience. Catalog each little detail.