Please note I'm writing this on a phone in the Austrian alps.
ADVICE
I always emphasize you never should take anybody's advice on stocks. I also say you should question famous or popular quotes etc.
I mean, how can you ever trust advice, in particular regarding Stocks?:
1. How can you tell they know what they are talking about?
2. If they actually DO know, it could be based on insider info and illegal
3. Will they be around to tell you when to close the deal (whether at a profit or a loss)?
4. If you don't know enough to make the decision yourself you can't judge the quality of the advice
On the other hand, if you never listen to advice in any situation you'll do less, experience less, learn less.
My way (not necessarily advice) is to listen to advice, pay attention to the facts, reasoning and logic behind the advice. I try to see which parts I actually can verify and understand fully and then I draw my own conclusions.
Some role models, mentors or "idols" have their strengths in fact finding and fact checking, others are strong in logic and drawing unusual conclusions, others can be contrarian indicators (e.g., if they are almost always wrong). Some just have a way of reasoning that triggers new thoughts in you, no matter if the reasoning, logic or facts are stringent or correct.
Find your own guiding lights, assess their particular strengths and weaknesses. Use what you can use and ignore the rest.
PS: this post was triggered by a comment about the "stopped clocks", perma bears, among my favourite financial thinkers. Basically, the reader wondered why I listened to such con men (as if I wasn't one of them :).