I freelance write and pitch story ideas to a handful of different publications, and I used to genuinely lose track of who I'd already pitched what to, embarrassing enough that I once followed up with an editor about a pitch she'd already rejected two months earlier because I'd forgotten. Set up a board with a task per pitch, custom field for which publication, status for pitched, in discussion, rejected, or accepted, and now I can see at a glance exactly where every single idea stands instead of relying on my own spotty memory. Caught myself about to send a pitch to an editor I'd already gotten a no from on that exact topic, would've been a second embarrassing moment if I hadn't checked first. Review collected by and hosted on G2.com.
Kept forgetting to actually update the status after getting a response for the first couple weeks, so the board looked more current than it actually was until I built the habit of updating it the same day I heard back instead of putting it off. Review collected by and hosted on G2.com.