You can control what you do or say. And that is all you need to do! What a relief! No need to control others or even to be concerned about them at all. Let people be people. What is wrong with that? People want to be themselves. Of course, people make mistakes, so let people make those mistakes, and if there are consequences, well then, that is a problem they will have to work out, isn't it?
There are not any things which "must not be done" by others. Others make mistakes, sometimes, terrible foolishness, but that is on them, isn't it? It is not a burden one must share or accept. I am not saying, do nothing all the time. Fight when necessary, avoid when possible, is my advice, because contemplation and work is preferable to pointless nonproductive fighting, which accomplishes little. What scientific discoveries did the Vikings ever make? Oh, do tell me about the longboat. For a thousand years, it is not much. Where is their literature, and how does it compare to our Canon? So fighting is necessary sometimes but is to be avoided, as the main glory is to be had by careful toil. I have always preferred to let the Vikings deal with the Vikings, because they will tend to devise effective solutions for one another.
I despise drinking, not for the reason of health, although that is a valid reason and supported by science, but for this other reason. Intoxication inhibits the higher intelligence, blinds us to the greater awareness, chains us to this material plane, imprisons us within our animal nature, so we do not know what it is we do or say. There is no getting around that it is evil. As to why it is popular and so common throughout all of history and civilization, there is a side of us that wants the Night. So the animal nature is definitely a powerful factor within us, and evolution's a work in progress, and it is known that monkeys, too, are fond of fermented fruit and will seek it out in the jungle. The question put before each human being is whether to indulge the base animal with its low instincts or to reach for the higher stage, for what will come next, if the species is to progress.