An interesting topic ! I have exactly the opposite problem to you. I could easily spend all day reading posts, and need to sometimes wheel myself in and make sure I write my own content as well. If anything, the biggest problem I have is not enough vote power to upvote all the worthy things I find !
In terms of what I read, once I've finished checking comments to my posts I tend to start with a few favourites - authors I've come to think of as friends, so upvoting them is a gesture of support and recognition. Then there are communities with posts that interest me. Finally, I'll sometimes just look at trending posts or pick a community at random, and wander around reading things and upvoting the ones I find interesting. But it's all a little random; my work life is pretty structured, so coming here it's nice to go with the flow and see where the internet rabbit holes take me :)
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