From illness and job insecurity to rising costs and shrinking pensions, many Gen X-ers are reaching midlife anxious, overstretched and woefully unprepared for retirement. Hannah Fearn reports on a generation in panic F or decades, Joel Young was doing well in his career as a television and media executive in London. He moved from contract to contract with the BBC and others, and could put away enough to manage gaps between jobs. He was able to rent a home in north London and had a comfortable,