Proper data management was a highly enforced topic day one of any of my computer classes. That and backing up work.
Personally, I always store my works through easily navigable folders. For example, all of my Photoshop files are nested under a folder labeled "Artwork" and then in another folder labeled "Photoshop". I then go into more detail for each project. I will have a set title for each project I am working on. If I am designing a logo for a company I will have a folder under "Photoshop" for the said company "Insert Company Name". Under that file I will have multiple folders categorizing everything needed for that one project. For example I would have a folder nested under "Insert Company Name" for "Reference Images" and "Finished Renders" or even "Test Files" to clean up the main folder.
The idea is to have easy to navigate and very clear nesting labels to help you locate exactly the data you need. If you needed the .png file of the Logo you created for ADM, your navigation bar should looks something like this:
I hope this helps! I'd be glad to show you a video demonstration to clarify anything.