On the 10th of November 1619 Rene Descartes had the dream that inspired his famous quote: ‘I think therefore I am.’
To reach this conclusion he went into seclusion and removed all stimuli as a thought-experiment to work out what he knew for certain and what he decided was that he must exist because he was thinking.
If other people tell you you’re writing good / bad stuff can you trust them? No – all you can know for sure is that you’re writing therefore you are a writer 🙂