Focusing

[NexusFlexus]

I've got a question for every one who felt the effects of I-doser.

Do you ever wander off and think of other stuff while listening to a dose? I mean i can't for the love of God focus on the sounds for an entire dose even if i am counting backwards or doing any other concentration technique. Do you have to focus on the sound through the whole dose? Maybe thats why i haven't got any effects yet cause i always lose focus soner or later, mostly because i get so tired when i'm listening to a dose, Even if its in the middle of the day.

EDIT: I know its very diffrent from person to another person but how important is it to focus on the sound through out the dose, and is it possible that me losing focus is the reason i haven't felt anything yet?