Last night I had numerous vivid dreams one of which involved me having a bath that contained many different coloured relaxation rocks / soaps or whatever you want to call them.

The dream dictionary tells me this would suggest I need to relax and feel the need to cleanse myself.

At present I'm trying to stop smoking (I only have one or two per day - rollies, not cigarettes) and I'm not sure if my dream was telling me not to stress about my addiction or if I need to get rid of this habit - which is all it is.

I think your dream is probably telling you to relax, but I don't think it's necessarily telling you to go back to smoking. You might associate smoking with relaxing, because you used smoking as a means of relaxation for so long, but that doesn't mean you can't learn to relax in other ways.