Engagement is the key on Steemit, I've come to realize during my 3 month stay on the platform. It's good to write less but write thoughtful posts than writing 4-5 posts a day (mostly one photograph and a one line caption)
.
Unless one is a great photographer, such posts really don't add any value to the platform.
Engage-Learn-Earn: that's the Steemit Curve to success, I believe
Engagement is part of the keys :). Content quality is also an important matter and expanding your network.
Investment can be a key too in Steemit :)