I am quiting cold turkey tomorow

Hi everybody,I decided to quit smoking. I will go cold turkey starting tomorrow. I had a general checkup last week and the results were very alarming with high cholesterol etc.Being in my late twenties the results were pretty bad. In order to try to avoid any heart related problems in the following 10 years i decided to stop smoking now.I know it will be hard because simply put i love smoking. I have connected it with everything i do daily.I have not yet announced it to anybody from my friends or family being afraid that i will not succeed even to start the day tomorrow without a cigarette. I am getting more confident though. My biggest fear is not the first week with having withdrawal symptoms but the days after that. How i am going to keep strong and do not smoke a cigarette in a bar or when stressed out and so on. Fortunately where i work almost everybody is a non smoker and that will help. I ll smoke my last cigarettes tonight. Wish me luck. Any tips for the first days will help.