I realise the title sounds obvious but I feel it's a quick tip worth mentioning.
When laboriously adding the same character to multiple places in the code, it's often quicker to copy it and then paste it.
e.g. You're trying to wrap 5 different strings in a custom UALocalizedString() method, it's not quite worth writing out a regular expression and so you start off by copy and pasting UALocalizedString( to the front of each string.
When it comes to adding the closing bracket you could press shift and zero multiple times, but it's much less tasking to copy a bracket and then press the paste keyboard shortcut after each string.