Children pick up on things faster when conditions remain consistent. When you are not consistent with your child, he or she will get the idea that it’s ok to do things wrong. If you always remain consistent then your child will understand what is expected of them and they will potty train much faster. If you can’t be consistent with your child you will find that following this or any other method will simply be unsuccessful.
Consitancy applies to not only potty training but bringing up children in general - try to be consistent with your kids whenever you can.