(idiom) success and failure; gain and loss; often used to describe weighing the various factors of an outcome or situation

success or failure, and smooth progress or setbacks; success and failure in all their aspects.

To sit and wait to see how something turns out instead of getting involved; to sit on the fence while others fight or work.

to judge or evaluate people based purely on their success or failure

Whether one succeeds or fails depends entirely on this single attempt; this is the decisive moment.