I have learned about the consequences of untamed words and actions i fear for them and i want to know how to get them to listen and think about their own stupid actions
It might be difficult for you to get them to think about their stupid actions. For example if you say, "your actions are stupid, you should think about them", then they might be averse to listening.
It might be easier to talk to them about your stupid actions:
- If they are friends of yours then they might want to hear stories about you
- If they're your actions, then you know those actions and their consequences and are able to talk about them
You might say something like, "Did I tell you about when I used untamed words and actions? I caused so much trouble! Here's what happened ... (tell the story) ... What I learned was (tell the lesson) ... That's why I don't do that any more. Now I do (something else) that actually works a lot better for me."
That is (very approximately) how an Alcoholics Anonymous meeting works, for example.
You didn't say exactly what kind of "untamed words and actions" you're worried about, but talking about yourself might be a general solution. For example I met a married couple recently, of whom one seemed to criticize the other a bit more than I thought was healthy. I considered telling them not to do that, and decided that it wasn't my business and that they wouldn't accept it from me. So instead (without mentioning them) I told them about my experience with my relationship with my wife, how we learned to stop our arguing; and I hope that was a more successful/informative/hopeful conversation.
In summary, maybe talk out of your own experience.
Also consider getting expert/specialized help or advice (e.g. ask a doctor or a teacher).