To be the change means to want, choose and commit your actions to do the right thing.
In order to do something, you have to want it. If you want something, you will endure all the struggles and pain that come with it.
You are determined to reach your goal.
A change can only happen if you want to see it happen, and the only a change could happen is if you put your effort into it.
It's obvious that nothing is going to happen without you. You can choose to make a change or not. To take action or just sit there.
But you know, at the end of the day, the choice was and is yours.