New research reveals more than one in three people are likely to break their pledge today. And there will be further failure in the days ahead, with weak-willed Brits set to give up their good intentions even before Quitters Day traditionally the second Friday of January, which falls on unlucky Friday 13 this year. Only a third (38) of the most determined people will stay on track until the end of the month, based on last year's performance, and the numbers in 2023 might well be less than that.