Profits at the public relations agency led by Terry Prone and her son Today FM presenter Anton Savage last year increased by more than €100,000.

Rita de Brun was a widow before 40, so she is sceptical of research that says we are happiest at any particular time. It’s different for everyone. Some people thrive later, into their 60s and 70s. We asked three celebrities in their prime if they were less or more content now.

The recent profit surge at the PR firm led by broadcaster Anton Savage slowed last year as the firm re-invested in the business.