Some aspects are more easily addressed than others.
Few employees have no problems.
For most it is a matter of how much or little personal concerns impinge upon their workplace behaviour. Such problems might concern relationships or health, they might involve debt or any of a hundred other worries. Thus, each party to an interview or other counter interaction brings to that event their own unique cluster of concerns. Those overburdened with personal problems find their capacity to interact impaired. Employees operating at the organisation-public interface should be alert to such factors.