lifestyle vs. personality

per·son·al·i·ty: noun

1 a: the quality or state of being a person b: personal existence
2 a: the condition or fact of relating to a particular person ; specifically : the condition of referring directly to or being aimed disparagingly or hostilely at an individual b: an offensively personal remark personalities>
3 a: the complex of characteristics that distinguishes an individual or a nation or group ; especially : the totality of an individual's behavioral and emotional characteristics b: a set of distinctive traits and characteristics
4 a: distinction or excellence of personal and social traits ; also : a person having such quality b: a person of importance, prominence, renown, or notoriety personality>

it looks as though there are a few definitions, but number 3 (in bold) seems most applicable. now let's do the same for the word lifestyle...

life·style: noun

The typical way of life of an individual, group, or culture
The consistent, integrated way of life of an individual as typified by his or her manner, attitudes, possessions, etc.

So from what I understand, personality is the traits of a human being, but the way they manifest their traits defines their lifestyle.
However, lifestyle is not always to do with choice. a person may have a particular lifestyle due to a disability, economic reasons, family problems, health factors, the government that rules their country, and cultural issues. So, it is quite an understatement to say that a person's lifestyle is in their control.

Also, personality is inherited and shaped by upbringing and experience. A car accident or other traumatic experience can totally change some one's personality just as falling in love or being friends with a particular group of people can.

Also, personality influences a lifestyle and vice versa.

it seems as though nothing is black and white!