A first place to start it to think about why does their resistance bother you, or in other words why are you resisting their resistance? How about completely accepting their resistance as a fact of nature and not allowing it to affect you any more than the fact that the other person surely has many other opinions that differ from yours.
It is common that we resist other people's opinions when we are not secure in our own decisions and opinions. If we are truly confident in our position, it makes much les difference if others agree or disagree. Think about at work a person that has been recently promoted to a leadership position. It is common that people that knew this person previously as their peer, may challenge this new leader much more than they would if a stranger came in and was assigned as their leader.
One way to build confidence in your new decisions is to be around new people that did not know you before. This allows you to see their reactions without the confusion of their past expectations of what you used to be like.
This is also the same as children as they grow up. It is often difficult for parents to see how much their children have grown. It is often others that accept them as adults before their parents.
I heard a story about Jesus that when he came upon a village that was resistant to his teachings, he would go around them. He said to his followers something like "There is no reason to spend our time trying to talk with those that are already set against our teachings".
So, be like Jesus, don't waste your time on those that are resistant to the changes or grown you are experiencing.