For we do need to recollect the past and to plan for the future at times. Doing what we have to do now well , for that will, in fact, be the best guarantee for the future. And also there will be no regrets when we think back about the past. For that we need wisdom, we need midfulness and understanding. To live wholesomely we need mindfulness, we need to engage mindfulness in various ways.
Mindfulness is like our watchdog.
Whenver an unwholesome thought arises, mindfulness can alert us. We shouldn't be thinking or responding this way. And realising that, we can check the unwholesome. You are getting angry. You better look at your anger.