Especially if it is the advice of a relative or family member because obviously they must be very concerned about your safety and have concerns that maybe if they don't advise you then you will become one of the addicted gamblers along with experiencing the bad effects of addiction. So the point is that we should really be able to consider first about any advice that comes before finally deciding, and also to minimize regret at the end when we feel that what they said before was right.
you can only get a genuine piece of advice or true concern from your loved ones and real friends. thus, if you receive such concern, better seriously consider it. because they are after for your welfare and not because they want something else from you. treasure those people who really do care for your well-being. as they want only the best for you and not because they are seeing something they can get out from you.
but for other people especially strangers, and commenting about your gambling habits, i guess, that's overboard and they are only seeing the surface. they don't know you as a person, so they only judge for what they are seeing.
Actually all the advice that comes is usually more directed towards a better change, but yes like us as humans must have a percentage of trust in everyone and as you said if indeed those who give advice are strangers who we don't even know at all then it is only natural that we have doubts about the advice they give even though basically there are also some that lead to goodness.
sometimes other people can give us valuable advice but most of the times we know deep inside what we really want and should just follow our deepest desires, with some kind of sense of course
with rationality too not just heart but you get what I mean
luck may help us but we can't rely just in lucky to make our decisions otherwise we'll be doomed to fail.