As imam Ibn al-Qayyim has pointed out, dhikr entails manifold benefits:

The most important of which is that it brings us closer to Allah, while keeping us away from Satan who whispers all kinds of thoughts and suggestions in our minds/hearts. The next most important benefit of dhikr is that it removes all feelings of grief, worry and anxiety from our hearts and bestows on our souls true serenity, joy, peace and bliss. Allah says, “Those who believe and whose hearts find tranquility in the remembrance of Allah. Lo, it is in the remembrance of Allah that hearts find tranquility (Qur’an: 13: 28).