I am on my fourth day of quitting "again" and I am not able to focus at all and the fatigue is overwhelming.  I just looked up this information and stumbled across a forum where everyone was complaining of extreme fatigue and lack of concentration months into quitting.  I am very concerned here because this is interfering with my job now and my job is my livelihood and I can't have something like quitting smoking jeopardize it for months or even weeks on end.  Does anyone have any tips that will help with the fatigue and feeling like I'm in a fog all day. The main reasons I quit isbecause I want more energy and wanted the morning brain fog to stop. Now the fatigue is 10x and the Brain fog is all day.  I only have brief moments where I can focus only.