Working is a requirement and being gay isn't a choice. Smoking and poor diet are choices that you can resolve. Smoking in short-term can be replaced with vaping. Poor diet can be fixed by eating less.
Last time I read about vaping, the jury is still out on the dangers of vaping.
http://www.vox.com/cards/e-cigarettes/how-dangerous-are-e-ci...
For people that use weed, vaping is probably safer than inhaling unfiltered joints. http://www.theweedblog.com/smoking-marijuana-vs-vaporizing-m...