Turn on full-disk encryption and protect cloud folders with zero-knowledge vaults where appropriate. Tools like FileVault, BitLocker, or Cryptomator raise the floor without complicating daily use. Store vault keys in a reputable password manager, and print a sealed recovery code for emergencies. Security only works if you continue using it; choose defaults that add protection silently, with routines that keep secrets safe without exhausting your attention.
Keep three copies, on two different media, with one offsite. Combine local Time Machine or image backups with a cloud backup service that supports versioning. Test restores on a small folder monthly. Record steps in your operating note so anyone can follow them. Backups matter most on bad days, so practice when it is calm. Confidence grows each time you witness a clean, fast recovery.