How do you define success as a writer? Is it holding your book in your hand? Having a short story published? Making a certain amount of income from your writing?
All the above. Success is typing 'The End' at the finish of that first draft and then highlighting it bold after the final edit. It's also hitting publish button on Amazon or signing that contract for publication. Signing your first copy to a reader. Getting a five-star review. Winning a place in a popular anthology or placing in a writing contest.
This year, for me, it's finishing a series, and starting a new one.
Each incident has its own feeling of satisfaction, and they should all be celebrated!