The withdrawl symptoms are just or almost the same as nictoine withdrawl symptoms. They are mostly mental, and even if you do go through about 5 days of feeling bad, look at the gain of your freedom when you come through.
I would suggest two things. Dont be a wussy. Yeah, that is right a wussy. So what if you cant sleep a few nights well, or you get strange dreams, and have some mystery aches. Thing of the long term gains you will get once you quit. Plus, when we are stressed we all get strange dreams, and if we want can worry ourselves into having mystery aches etc.
Next, it is all mental. Your withdrawl symptoms are mostly in your head. You should think of these things as good feelings. The feeling of that monkey on your back dying little by little. You should enjoy that you are on your way to freedom. You should not be looking at it as a sacrifice, or doom or gloom. Your stresses are in your head, and it is something that should not be seen as a bad thing. You made a decision to quit, not be happy with that decision. Letting the withdrawl symptoms be a negative thing is giving into the monkey on your back. You might feel a void, because you have given up a regular activity, but that will be quickly filled with other more healthy pleasures and past times.
To end, the feelings you have should be seen as a good thing. It is your body overcoming the monkey on your back. Next, remeber that we all have strange dreams, lack of sleep, etc when we are stressed out. Lastly, most of these withdrawl symptoms are just in your head. They are not real. That is why a number of people said they felt no real withdrawl symptoms.
Good luck, enjoy life, and enjoy the next few days.