About This Answer
A meditator finds that mindfulness slips away during conversation and only returns after the conversation is over. Ajahn Dtun says this shows mindfulness is still weak, like someone waking up from sleep. The remedy is to train in samādhi in one's free time; as the power of mindfulness grows, one will be mindful before speaking. He admits that he too used to lose mindfulness often, and practised samādhi so that mindfulness and wisdom could govern the mind.
Without mindfulness, greed, anger, liking and disliking take control, and we think, say and do things that are not good and cause suffering. With mindfulness and wisdom in charge, we say only what is good and feel at ease afterwards.
Before acting, wisdom considers whether the action will benefit oneself, one's family and society. If a bad thought arises with the wish to act on it, wisdom sees that it would harm oneself and others and cause unrest, and one does not follow the defilements. So to keep up with thoughts and moods, he says, one must practise samādhi.