So often content producers have no real plan. If they write a blog they simply decide that day what they plan to write. First off, this makes the writing process more difficult and makes repurposing much harder.
Effective reuse comes from planned reuse. The best tip I can give you is to sit down once a month or so and create an editorial calendar. This allows you to create some goals, but it also allows you to think big picture about what needs to be written to create a body of work that will have multiple uses.
You can always slip hot topics into your calendar on the fly, but you’ll find that if you do keyword research for your industry and use that list for topic focus, you’ll get far more bang for what you write and you won’t feel nearly as much pressure always trying to come up with topics.