To answer your question on if you will be addicted to E-Cigs, Yes, they are addicting just like the Real ones you now smoke. You said you get a tight chest and other sign's of addiction if you dont smoke a real cig for awhile during the day. The good thing about the E-Cig is you can start out on a high level of nicotine and step down at your own rate to a much smaller amount and keep useing your E-Cig which is much safer than a real one, OR you can drop all the way down to zero nicotine and just put everything away and call it quits. Its up yo you how you apporach this. Keep in mind,useing an E-Cig in one sitting takes twice as long as it would if you were useing real cig, so it usually takes twice the time to satisify your craveing for the nicotine per E-Cig use. You also should learn how to use your E-Cig the right way, it makes all the difference in the world. Happy vapeing, i hope it works for you.