Good post @jonessteemit, I think that a lot of people come with bad habits from other social media platforms (I'm looking at you instagram), especially regarding the begging for upvotes and the follow back approach.

One more thing that belongs on your list, it's the biggest mistake anyone can make on steemit, and it's quitting. A lot of people just abandon their accounts when they don't see immediate returns, everything takes time to grow, good things come to those that work it.