This is completely understandable. Like others have said, command words are the first thing to check.
+For essay-based subjects, it might also be helpful to make mind-maps displaying what you could discuss for more obscure subjects (which you have probably tried, sorry if this is the case) and then *pair them up into themes*.
Example:
Sociology
Gender roles within the family:
- More jobs available to women, expansion of the service sector ---> (factors affecting GR)
- Men's changing attitudes toward childcare --->(positive effect of changing GR)
- Women underestimate the time they spend on domestic labour --->(evaluation point, opposing the idea that enough change has occurred)
For non-essay-based subjects - ask yourself key questions from your revision
Example: Chemistry
An example reaction is given in the question and you are told that this is feasible at high temperature (Gibbs)
-Exothermic or endothermic reaction? - how do you know? - what does it mean?
-More positive or negative entropy? - how do you know? - what does it mean?
Answering each question hits every mark and formulates a clear and concise answer. Hope this was somewhat helpful