It's great that you share your concerns with us! Cause I honestly think that everyone, especially in the beginning, struggles on steemit! But that's what makes it so special. Steemit offers a variety of great things, even if you don't have one specific topic to write about, you're always up to date, can take part in challenges or just read about your favorite topic! And if you want to share anything then you can post it and you'll know that people are gonna read your post & they might even upvote :) Good luck with your following posts here on Steemit!