As a base SAS programmer, you know the drill:
You submit your SAS code, which contains an unbalanced quote, so now you've got not only and unclosed quote, but also unclosed comments, macro function definitions, and a missing run; or quit; statement.
What's your best trick for not having those unbalanced quotes bother you?
As for myself, I usually Google for "SAS unbalanced quote", and end up with submitting something like this:
*); */; /*’*/ /*”*/; %mend;
... to break out of unclosed comments, quotes and macro functions.