I don't claim to understand why people do what they do. But, looking back over my 68 years, many of my "habits", it seems to me, may have come about because of strict parenting. Many of the things my parents put on the prohibited list or only granted in very limited amounts, I indulged myself when I became self sufficient. I don't necessarily ascribe to my observation being a general rule, though.
Still, life is about choices. One can choose to continually indulge one's self with harmful substances when used to excess, hang with the wrong people, or learn to control those indulgences and wants and associations.
Sometimes I look at myself and say WTF! Does anyone else notice that perhaps each of us is more than one person in a single body? A friend of mine who is a shrink, specializing in multiple personalities, once told me that is actually pretty normal...until you start giving them different names.
![grin =D](http://www.armedpolitesociety.com/Smileys/default/grin.gif)