Step 1: tags. Don't tag everything you post steemit. If you want to post a joke, put funny or joke for a tag, if you want to post a story, tag it story.
Step 2: Make it interesting. People want to read funny jokes, and cool stories, so ask your friends for opinions, is this joke funny, is this story good.
Step 3: Make it original. Sure, you can copy and paste jokes from the front page of reddit, but that won't get you any upvotes.
Step 4: experiment with ideas. Some people want to ready about one thing while other people may want to read about something else. See what people want to read about.