To only see your casts, on the Buffs Custom tab, Cast By needs to be set to Self.

• Use the Tweaks plugin as it has an option to set Cast By to Self for all custom buffs

• If not using the Tweaks plugin, on the Buffs Custom tab select your class then the buff and check Cast By
  • If using Automatic Buffs at the bottom of the tab, check Cast by Self is set