My Bottom Line: Nicola Shaw, HS1

Nicola Shaw is the chief executive of HS1, external, which owns the railway and stations between St Pancras and the Channel Tunnel.

She says you should always strive to do things better in your business - as it can save you in tough times.

Nicola appeared on The Bottom Line, external, which was broadcast on BBC Radio 4, external, the BBC World Service, external, BBC World News and the BBC News Channel, external. You can also download the podcast, external.

Explore more My Bottom Line, external videos.