Meaning, purpose, identity – all of these are wrapped up in our work and career. So it's no surprise that when we step away from work we can feel a bit unmoored. In the second half of our two-part special on the 'unretirement' movement, we look at what's underpinning this return to work in retirement years. It can come down to rediscovering purpose and meaning in both life and work. But how can we do that?