2 Keep a Little Hard Drive Space Free
It’s a good idea to keep around 10% of your hard drive space free if possible. As your hard drive becomes full, your Mac has to shuffle around and rewrite a lot of data just to make everything fit. This puts stress on your Mac and can eventually cause problems. But if you always delete enough to keep a bit of your hard drive empty, your Mac won’t have to work nearly so hard when moving data, which speeds up your experience and makes your Mac last longer. Use an external hard drive to backup your important files, so when you’re running low on storage space, you can safely clear large files from your MacBook.