The line shows the quality of one’s stability, their structure, routine, security, sense of feeling grounded, their vitality and health. It relates very much to ones base, roots and home. It is also the line on the hand in which events can be most clearly seen and timed. These events are of course always subjective to the person and show their relationship to them rather than the specifics of the event itself.
Some people do not have a clear single line, but have two. This can present in many different forms, but the example I am referring to in this instance is when there is a break in the line and an overlap of some kind.
The overlap and change in the life line signifies a change in the person, relating to aspects of the home and family. In my experience around 80% of the people with this mark will have considered or actually have moved abroad. The exceptions to the rule are 1). when someone is young and the break corresponds to 25 30+ years of age (measured chronologically down the line) and this aspect of themselves has not yet manifested; 2). when the person has a very close and intimate relationship with their family, which means the shift and change is merely moving out of the family home, village or town or 3). when there does not appear to be a physical move or change on the horizon, but there will without question be a psychological shift of some measure.