I feel like with all the advice going around it's time to remind people of the most important rule of the internet:
DON'T TAKE ADVICE* FROM PEOPLE ON THE INTERNET
Why?
1 . Because people on the internet can only give advice from their experience. This makes them biased. Not only in how things should be done but in how things normally go wrong.
2 . People who care enough about a topic to post about are likely people with strong opinions. That means their views are more extreme than say most lurkers. (The vast majority of people). Similarly people who give unsolicited advice are often really just passive-aggressively complaining.
3 . People on the internet are either anonymous or have their reputation amongst hundreds to millions of people at stake. When people are anonymous the advice they give is often less "how things work irl" and more "how i think things should work". So, if they are completing a wish fulfillment scenario wholesale, they still may be giving advice that doesn't match reality. Likewise people who are not anonymous would like to make sure that they aren't seen poorly. This means they can be dishonest or misleading in order to save face. Even if they're truthful, you can expect the information to be biased to show them in a positive light.
4 . Internet people are not real people! Personalities of people who you have to interact with in everyday life are often entirely different than they way they seem online. I have personally experienced this. Presenting an authentic version of yourself with only text is a skill. Even then, people interpret text differently.
5 . The advice is not tailored to you. Most people on the internet haven't met you so the advice will only apply to the type of person they see most often (which itself is a bias). Not only that, the person giving the advice may err on the wrong side of caution. For example, telling you "to add more salt than you think you need" assuming that you normally under-season your food. If you typically over-season your food, your dish will be not only ruined but perhaps dangerous.
6 . You don't know the person giving the advice. The person giving you pointers may not even be the type of person you would want advice from. In real life, you can see if they have expertise in the area they advise in. You'd probably know if their cakes always turn out dry, for example. On the internet, you kinda have to take their word for it. Even if their advice gives them results they like, you may find out you wouldn't enjoy being in their situation.
So, what does this mean?
This means that when you receive advice on the internet take it with a grain of salt. ESPECIALLY, when it comes to human interaction and relationships but also any cause where success is subjective.
Relationship advice (work, friends, partners, etc) is particularly heinous. Your personality doesn't just affect you. It affects the people you attract and the people you repulse. It is one of life's great ironies that people afraid of commitment attract people afraid of being alone (and vice versa). Advice from either type is likely to be bad especially if you don't lean to being the same type as the advice giver. This isn't the only case. People with low education are more likely to meet people with low education. People with disposable income are more likely to meet people with disposable income. The location of a person can affect not only how many people around them have negative traits but WHO is more likely to have those traits and WHAT those traits are likely to be. And again, THOSE WITH NEGATIVE EXPERIENCES ARE MORE LIKELY TO COMPLAIN ABOUT THEM. They're also more likely to assume that those experiences are the norm (which may be true for them and the the friends they chose but not for you, the person taking the advice).
The real rules for success human interaction and this site are simple: Set firm boundaries for yourself and let them be know explicitly, respect and know the boundaries of others, and ask for permission before you act. Or in French, "communicate for once".
*This especially applies to any advice about interactions with other people.