Just that really - what is the best thing you've done/money you've spent on personal or professional development. Maybe it was to do with personal grooming or getting a career coach or doing some skills training etc......
Someone (juggling career and young family) once said the best thing she'd done was (a) get a cleaner, (b) get a personal trainer.
That got me thinking. I think it's really interesting to know what other people have done that they think was a really wise decision.......