Based on this data, there are significant problems faced by adolescents today, namely the inability to overcome various life challenges. This shows an indication of a deficiency in their ability to achieve and feel true happiness, especially at the stage of identity exploration during the Quarterlife crisis where many people experience mental disorders, depression and even some suicides. To overcome this problem, it is important to explore the concept of happiness from a more holistic perspective.. The author uses library research through the book of Tafsir Al-Qur'ān Al-'Aẓīm by Al-Imam Al-Hafiz Imamuddin Abi Fida' Ismail Ibn Umar Kaṡīr Al-Damasyqi so that this research is included in the qualitative category using descriptive analysis methods, which are studied through a thematic approach from the verses of the Qur'an through the method (tafsir mawdhu'i) thematic interpretation. There are two results of this paper, first happiness in Ibn Kaṡīr's Tafsir of the Qur'ān Al-'Aẓīm, there are a number of verses terms in the Quran, as follows that is sa’ādatan, falāhatan, al-Fawzu, farah, tamtīā, isrāran, hasanatan. Second result ways to reach happiness in Ibn Kaṡīr's Tafsir of the Qur'ān Al-'Aẓīm to achieve overall happiness, it is important to focus on three main aspects that is Happiness of the hereafter, spiritual, social, and material.