After all, the efficiencies of lithium-ion batteries will ultimately benefit everyone, so perseverance as well as compliance is in order.

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"We were very fortunate in that we were sufficiently focused and that our perseverance paid off so that we were able to identify an alternative way forward, " she said.

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So definitely applying those lessons of perseverance and learning from mistakes and setting goals has definitely helped me in business.

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Hospitals do not have a dietician on every ward all the time, so getting the message through can take a bit of perseverance.

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Even so, Lady Ashton has won admirers, not least for perseverance.

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