 Develop the habit of noticing the directive that is given in the question. For instance, the question says critically examined, explain or substantiate. We must realize that these directives have different meanings. The meaning changes when the directive is changed. And if you notice the directive and keep that in mind while writing your answers, your answer will be exactly as per the demand of the question. Next, I believe that it is very important to superimpose current affairs in all the static subjects that you read because a certain thing or a two were in news regarding that topic. So it is important that you develop the habit of adding current affairs as examples or case studies in your answers of GS optional even in essay.