He practised meditation under a number of masters, among whom was Ajahn Mun, a highly respected and accomplished meditation teacher of the time. Ajahn Mun had an indelible influence on Ajahn Chah, giving his meditation practice the direction and clarity that it lacked. Ajahn Chah later became an accomplished meditation teacher in his own right, sharing his realization of the Dhamma with those who sought it. The essence of his teaching was rather simple: be mindful, don't hang on to anything, let go and surrender to the way things are.