Anxiety is an organic and natural human response system. However, to a high degree, it can cause individual, social and affective damage, leading to psychological illness and hindering processes such as concentration, perception and memorisation. Evaluative situations, such as the entrance exam, can trigger these difficulties, as they are precisely a turbulent and anxiogenic period. Some methods help to reduce stress, such as the Mindfulness technique, which has been widely used in psychology studies today, testing its effectiveness in reducing stress and anxiety levels in various contexts. This research demonstrated the effectiveness of the method with pre-university students through the implementation of a basic eight-week programme. In addition to a decrease in anxiety levels, there was an improvement in participants' attention, concentration, well-being, resilience and study habits.