Researchers have identified the top 40 things everyone should do by the age of 40 - getting fired from a job, falling in love – and becoming debt free. A poll of 2,000 adults found they believe someone embarking on their fifth decade should also have given blood and bought a house. They should also have had four relationships, three heartbreaks and spent some time travelling the world. It also emerged 55 per cent of those over 40 were worried about the milestone birthday, but 45 per cent admitted they enjoyed the experience overall.