It’s generic! For instance, on social media, the video has to
fit the masses to conform to what self-help people want to hear. As
such, it’s not specific to current circumstances.
Some, like eg, waking up at 5 AM for "the early bird gets the worm," are
scientifically illiterate! Sleep should be natural, as far as possible!
Advice assumes a certain type of personality, but in reality, almost
every personality can be useful in certain cases, if you know how to use
it appropriately. However, this also means that some personalities have
their drawbacks and don't really fit into society! See, I just gave you
positive-sounding advice; I hope you caught that fallacy.
Worst of all, you do need to try it out or apply it to your situation.
Just hearing advice doesn't do much, although you do need to listen to
advice, or read about it, to know what it is and think about its
relevance in the first place.
People need to sound nice. A generic piece of advice transfers the problem back to you at greater form, greater guilt that they "helped". It is kinda even more damaging when they say you failed even though they tried to help.
Advice needs to be said with fluency so often they only focus on one side, absolutes, like "always refuse"... There might be exceptions. For instance, I wouldn't refuse something that gets me fired from work if I have no alternatives. Good advice can sometimes reduce options beyond what is optimal...
They try to build a very logical chain, ignoring the fact that the chaotic reality is way more unintelligible than what we think, also N=1 fallacy further exacerbates this.
I will acknowledge firstly that it is not guaranteed to work, and say it "maybe" will work. It will certainly reduce the sense of confidence, which is a bit socially awkward until you realize that implying you are providing perfectly-always-beneficial advice was never truthful in the first place.
It’s fine to mention something that worked for you, but frame it as an example of something that they may or may not want to try. However, little of this nature should even be considered until they have given you some positive indication that you've given them an experience of feeling understood.
Quick and hasty advice implies that you ALREADY don't wanna listen to their story in full and that it implies that there is a quick solution to long-lasting problems. Nope! This is just not the case!