If this statement is true, then many many many people should be careful with their actions and their words. People are careless with some of the actions they make that may hurt others, and others talk behind someones back. It has become sad that sometimes these actions happen and we don’t even notice. We may say something about a close friend and not even realise what was said moments after, sometimes being it to late.
To those who believe this statement to be true, they are very careful with every movement and sound , because in the future they want to be treated well and not afraid that karma will come and bite them in the neck.
If this statement is to be true,  we should all be kind to each other ,and treat them with kindness and warmness because karma may appear at any second.