If delegates at yesterday's Institute of Grocery Distribution annual convention were expecting Allan Leighton to shed some light on his recent resignation as president and CEO of Wal-Mart Europe , they must have gone home disappointed. At the very least, many were hoping to hear him dish the dirt on the US group which acquired Asda last summer, but Leighton refused to oblige, stressing that Wal-Mart had tried very hard to keep him, but had been understanding about his ultimate decision to leave.Sceptics reminded onlookers that his successor, David Ferguson, was in attendance, perhaps to keep tabs on Leighton, who explained that his decision to "go plural" meant just that - he will be involved with six or seven companies that together will amount to a full-time job. Or probably, knowing Leighton's capacity for work, several full-time jobs.Expounding on the typical career path, Leighton divided an employee trajectory into three phases; starting out, sorting out and getting out. When workers first enter employment, it will take them three to five years to find out what they want to do. Moving into phase two, employees hone their skill set and assess their capabilities, and then either move through an organisation or redirect their energies into a new field and build up a career there. Finally, the next stage is to get out. Typically, this has meant retiring, and Leighton feels that's rather sad, for after all, "We only ever live one life." Getting out and doing a variety of things while still young enough to make a weighty contribution makes far more sense, in his view.He teased the audience with the news that he would reveal within the next two or three weeks what his personal plans are, although it emerged soon after that they involve a non-executive chairman of Internet retailer