Good conditions for learning are motivation, high self-esteem and relaxation. These things allow the flow of acquisition to move more freely without being blocked. Mental blocks can occur when a listener is stressed or anxious about something. This creates a mental block to the acquisition of language. It might even make it worse because you associate learning English with that painful or boring classroom situation. You really have nothing to fear or worry about when you listen to this. In fact, it can be an extremely pleasurable experience.