I'm looking for a powerful way to describe the fact that -after performing a certain activity- there are only two possible outcomes:
1) It's a great success (only in 20% of cases)
2) It's of no or little use and can even do you some harm (in 80% of cases)
I would like to use this description to convince people that they should do everything they can to ensure their efforts result in outcome number 1.
Context:
I would like to use this in the context of writing online content: 20% of content generates 90% of engagement. So if you are going to create an online publication, you'd better give it some serious attention so it ends up at the right side/staple that actually generates engagement.
I've considered:
Your work will either end up at the 20% 'staple' that does it all or at the 80% 'staple' that does you no good at all.
Yet, it feels like that description lacks power and elegance.
I'm open to phrases, expressions, idioms and metaphors. Ideally, it creates a feeling of urgency and it is easy to understand/picture for almost any reader.
I've found this other topic, but I don't think it's a duplicate. Although the topic starter is also asking for an idiom with high contrast in possible outcomes, my outcome number 2 is not negative per definition: it can be slightly positive. Therefore, the suggestions 'going all in' (where you lose it all), 'double-edged sword' and 'high risk/high reward' don't cover it.