The joy of life is born of concentration. When you are having a cup of tea, the value of that experience depends on your concentration. You have to drink the tea with 100 percent of your concentration.
From time to time, to remind ourselves to relax and be peaceful, we may wish to set aside some time for a retreat, a day of mindfulness, when we can walk slowly, smile, drink tea with a friend, enjoy being together as if we are the happiest people on Earth.
If you are capable of brushing your teeth in mindfulness, then you will be able to enjoy the time when you take a shower, cook your breakfast, sip your tea.
You must be completely awake in the present to enjoy the tea.