Make small, incremental changes in the correct direction that will face minimal internal resistance?

A lot of people want everything, immediately, and seem to believe maximalist approaches are no more politically dangerous than more incrementalist ones. They're wrong: prioritization is a thing, and pragmatism and realism about what you can accomplish isn't a sign of selling out but of wanting to be an effective agent of change.

And once you succeed at the first tranche of easier wins, you've built up the trust, skills, and political capital to take on the second tranche. Rinse and repeat.