1. Lighting:
Always make your room darker before trying the doses. Doses work great in less lighting, preferably dim blue lighting and not Bright Sunlight or Flashy Videos in front of you while trying the doses. Keep your eyes closed while you take the doses.

2. Concentration:
Concentration is also an important factor. You need not concentrate on the doses but do concentrate in not in concentrating in anything, if you get what I mean. Don't do maths or play chess while taking doses. I mean dont even read while taking doses.

3. Distraction:
Make sure you are not distracted every minute by someone while taking doses. Make sure kids are away or sleeping and you are not receiving calls by your girlfriend every once in a while, when administrating doses. Make sure your bowel is empty before trying the dose, so that you don't get interrupted in between.

4. Patience:
You need patience. Don't just quit. Leave the doses to be played till it finishes. Bineural beats take time to have an effect on you. So the doses are so long. Dont expect it to make you knocked out after a minute or two. Listen to the whole dose.

5. Technical:
Make sure you have good quality STERIO headphones and you are making the headphone orientation right. Make sure the left and right sounds are being played in the respective ears.
To make sure the orientation is right, Download Brainwave Generator from http://www.bwgen.com and make in the configuration wizard, listen for Left and right sounds and make sure they are played in respective ears. If left and right sounds are played in both ears or if Left plays in right and right plays in left, you have a problem. Try changing your headphones or just the Left\Right orientation.

Also make sure you are not getting any other feedback sound in your headphones. However this may not cause much problem, but it may in some cases.

6. Belief:
You dont need to believe I-Doser works for sure. You will certainly after having the dose properly, but don't doubt that it may work, or may not. Not certainly while taking doses. You should start with a cool mind with near nothing in your head while trying doses at the beginning. Later you will figure out how to do it automatically.

I'm not trying yo prove anything here. I-Doser works for me and hope it does for you too. However, I have overemphasised or exagerrated many things in this post, but just to make you understand what you might be doing wrong.