When working with big functions in the decompiler, it may be difficult to find what you need if the listing is long. While you can use cross-references to jump between uses of a variable or collapse parts of pseudocode to make it more compact, there is one simple shortcut which can make your life easier.
The shortcut is not currently (IDA 8.1) shown in the context menu, but it was mentioned in the release notes for IDA 7.4:
You can also discover it by opening the Options > Shortcuts… dialog while the cursor is positioned on a brace or parenthesis:
This dialog can also be used to modify the shortcut to something you may find more convenient, for example Ctrl–]