From this videoconference talk from 22 March 2019, Ajahn Anan discusses samadhi, or concentration, and its benefits.

An excerpt: "Concentration can help the mind to have radiance and become more subtle. It helps to reduce stress. It reduces anger and aggression. Concentration gathers the mind together and makes it strong. When the mind has the peace that comes from concentration, then there is also the quality of metta, or loving kindness, too."

Note: One can read this talk and others at the Wat Marp Jan 'Reflections' page, which also includes questions and answers with Ajahn Anan, which are not in the audio files. See: https://watmarpjan.org/en/dhamma-reflections/reflections-archive/