how do you know if you're any good? photographically speaking...
This is somehow two questions packed in one. The first is "When do you think you are good?", the second "Are you good if others think that you are?".
The reference for the first is whatever goals you (generic 'you') set for yourself. If photographic goodness consists (for you) in sitting on piles of money made from your photography then you are good if you are sitting on piles of money made from your photography. If it's to have your photos in galleries and the art establishment praising you then you are good if you have your photos in galleries and the art establishment praising you. If it's all of the above plus women throwing themselves at your feet then you are good when that happens. And so on.
The problem with the above is that it's a little too subjective. You can claim goodness even if your stuff is crap for others by setting impossibly low standards. (Conversely, an amusing alternative is to justify your photography, no matter how bad it is, by claiming that you have impossibly high standards, and that failure to meet them is only natural after all).
The second question is more complex because 'the others' are not a unified, single entity with a uniform opinion. In fact, whatever you do, some people will like it (e.g. your mam) and some will be bored stiff. The ratio could be important though. Lets pretend though that the group that matters is that of your peers, other photographers of similar photographic persuasion. Well, then you 're good when there's consensus in their rapturous response, admiration, enthusiasm, or even jealousy-induced-hate. The greater the number of admirers the better. If they are voluntarily expressing their admiration again all the better (so the best time to get a sincere response is after you are dead, because then you are not useful to anyone. Unfortunately it is also a bit late to be of any use to you too).
The problem with this is that it is far too detached from how you think about your work - others may hate what you do all the while you are perfectly happy with it. And who's to say the others are right and you are not?
So, there are two outcomes from four combinations:
(1) You think you stink, and others think you stink too -> you stink
(2)You think you 're good, but others think you stink -> result depends on what you place more importance to
(3) You think you stink, but others think you are good -> as above, but it will feel better if you let others persuade you
(4)You think you 're good, and others think so too -> You made it. You are good (there's none left to disagree with it).
😀