Do I feel like this because I no longer smoke cigarettes?

My last cigarette was Saturday night, I haven't smoked since then although I do use an electronic cigarettes which produces a virtually harmless consumable vapor with nicotine. Each day I noticed that my mind is a lot more clear, and I have gained tons of control over my thoughts, my mind no longer races,... show more My last cigarette was Saturday night, I haven't smoked since then although I do use an electronic cigarettes which produces a virtually harmless consumable vapor with nicotine. Each day I noticed that my mind is a lot more clear, and I have gained tons of control over my thoughts, my mind no longer races, I'm in a much better mood all the time, I sleep better and have tons noes energy, and I feel like I've been missing life all the years I was smoking, my skin looks way healthier, I feel way more alive and way happier. Is it possible that all these things are because I quit smoking.
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