>We’ve got a tendency towards hero culture as a society, in which we expect one person to solve the problem. That fails on almost any problem of reasonable size and impact - you yourself cannot solve, say, climate change - and it leads us to feel like we’re not doing anything if we’re not doing everything.

Being a hero is far more exciting and feels more "action-oriented" than the actual solution to most problems: consistent concerted effort over a long period of time. But it's the latter that actually works, whether in something as personal as healthy living or something as broad as national policy.