no, chamomille will not help your lucidiy. if anything it is a relaxant. Teas and herbs stuff don't help, what helps are persistence and repetition. following the same method over and over.

if you want an "expert response" from the description of the user on this board, it might not be accurate. I've just registered on this particular board, but I've been doing lucid dreaming, obe for over 12 years and can do them at will and have thousands of times.

pick a method of learning lucid dream or obe, WILD or whatever, do it every nite over and over again, and you will learn it and be able to repeat it over and over again. The time and effort doing it is absolutely worth it. How long does it take? could be a week to several months for your first experience. Then after than could be years to have it under control.

Don't look outside of yourself for substances or things to gain lucidity, it is all inside of you. it is just like learning to ride a bike, take alot of practise.