I believe this: Because life is self-organizing and regenerating, even the very tiny shifts we make away from harm and towards sustenance of life open up possibilities that compound upon themselves.
It's not *just* a park, a food forest, a fair trade organic banana, a pre-school with free breakfast - it's also all the descendants of that one tired butterfly that needed that shrub in that park to lay her eggs. Etc.
Don't minimize the ripples of the healing work you do just because it starts small and humble.