Once a commitment to sustainability has been made, the range of potential activities that could be undertaken is both wide and varied. The truth is that not all options are born equal, not just in terms of the impact they will have but also in terms of how interesting they will be to the outside world, especially consumers.
It's also important to be realistic. There is a well-documented say-do gap between what consumers say about sustainability and what they actually buy. For most, it's a secondary influence rather than the primary reason to choose a brand, and it isn't a reliable route to a price premium. Its value lies in trust and brand equity, and it isn't equally relevant for every brand. That's why choosing what to communicate, and what to simply get on with, matters so much.
A key principle to this model is to always be doing more 'below the waterline' than which you communicate externally 'above the waterline' - otherwise a brand can be at risk of greenwashing!