Pattern recognition, recency and familiarity biases can impact our perceptions and responses. If you're hiring a librarian and the applicant doesn't look like your preconceived notion of what a librarian looks like, does that impact your assessment of them? If your high school bully was named Toby, does that affect your impressions of other Tobys you meet later? On average it does. Don't be average.
The odds are very high that any people you’re leading, and from whom you’re trying to get buy-in for change, have had leaders like you try it with them before. On average, it’s likely that those previous efforts and results have not been great. Overt and obvious opposition is easy to spot and you're compelled to actively deal with it but how do you spot and proactively manage those that don't actively oppose change but 'drag the chain'?