Even a few years ago, you could end up ranking first on the Google Search Page Results if you sprinkled keywords throughout your write-up. Naturally, people came up with shortcuts and tried to find loopholes in the system. To their surprise, Google turned out to be smarter than them and launched updates like Panda, Penguin, etc. These helped Google understand the context of your overall writing. Google may shadow or ban your website if you misuse keywords and use them excessively.
The secret you’re wondering? Use keywords judiciously and only when they make sense in the context of your writing.