Bad Excel habits rarely cause problems straight away. Instead, they quietly build up until your workbook becomes difficult to update, troubleshoot, or trust—and by then, fixing everything can take longer than rebuilding it. None of these five habits will break a small spreadsheet overnight, but once your workbook grows or someone else has to use it, they become much harder to undo.

Most people assume Python in Excel is something you use for complex data analysis. I found it useful for a much simpler reason: it helped me deal with the spreadsheet jobs I normally leave until later. Splitting messy names, comparing lists, and turning numbers into written insights became much easier without relying on complicated formulas or Power Query.

A few minutes spent trying the right Excel tools this weekend could save you hours in the weeks ahead. These five built-in features tackle common frustrations like scrolling through huge workbooks, cleaning up pasted data, and finding problem cells, so you can put them straight to use on Monday morning.

If you haven't used Excel in a while, you may be surprised by how much it has changed. Whether you switched to Google Sheets, moved to open-source software, stayed with an older version, or simply stopped following updates, Microsoft has added features that could dramatically change how you work with spreadsheets.

For years, I accepted Excel's ribbon exactly as Microsoft designed it, even though I only used a fraction of its commands. After spending 10 minutes removing the clutter and reorganizing my favorite tools, I had a personalized workspace that sped up my workflow and stayed with me every time I opened Excel.

After years of using Excel, it's easy to fall into muscle memory. You click the same ribbon tabs, rely on the same shortcuts, and barely notice when Microsoft adds new tools. That's how I initially overlooked Focus Cell, a simple feature that solved one of my biggest frustrations when working in Excel.