
you can make success objective when compared against KPIs or precedent from similar products. but, it can also be very subjective when you view it within your own game.
i'd count my first month of Foundation (https://foundationessays.com), a library of blogs from founders and technologists, a success.
through steady, and not overly intense, marketing i've added just over a user a day.
i think my most prominent observations fit in with what many others have said before: