This will be a very short post, and it's mostly my thinking around a puzzle-me-this notion.
I've recently encountered a number of situations where people acted highly irrationally. In some cases, their behaviour was very clearly against their own self-interest. The behaviour, if continued, would negatively impact their lives in a significant way. And the thing is, most of the time they know this is the case and can't take the steps to remedy their situation.
To what extent does an individual's surroundings influence their judgment? How long is enough for a person to wallow in their misery? How can an external party impact the person who's struggling? What is getting in the way of the individual taking steps to make a change?