The long term goal is to train your brain to naturally change its frequencies on-demand (especially with audios embedding binaural beats or isochronic tones). You should eventually acquire the ability to adjust your mind state and thinking parameters according to your current situation. Of course, we suggest keeping on listening to the audio tracks on a regular basis as they will always provide positive reinforcement and prevent your mind from regressing and being dispersed, which is also natural. Please note that if some people learn faster, some others will regress faster, so take actions according to what you feel is best for you always.