 You shouldnt always try to tell other people they are doing bad things. First, you have to think about all the bad things that you do, and you have to stop doing those bad things. Then maybe you can help other people to stop doing bad things too. Maybe you are doing lots of bad things, and your friend is just doing one little bad thing. If you are still doing lots of bad things, you cant help them stop doing that little bad thing. Its like this. All those bad things you do are making you blind, like you have a big bit of wood in your eye. And maybe your friend is just doing one little thing wrong, like they just have a little splinter of wood in their eye. You have to take that big bit of wood out of your eye, so that you can see properly, then maybe you can help your friend get that little splinter out of their eye. 