The first thing that you should know is that difference is the only constant thing. We are going through some changes every day. Maybe, we cannot witness those changes with our naked eyes, but small changes are happening all the time.
However, what we can do is to opt for positive changes. Well, as humans, we always point our fingers to others. But we fail to notice our negative traits. We have to understand that; we need to change ourselves first. After that, we will earn the position of pointing mistakes of others.
The best thing that you can do is to be the change which you are expecting to see in the world. For instance, if you want to change a specific social behavior of people, you have to acknowledge whether you have that specific behavior or not.
In case, if you find out that you are in the same league, you have to change yourself first. After that, you can help other people to improve as well. And in this way, you can bring a change in this world. Therefore, start it from yourself.