Reading a book (specifically Pride and Prejudice ) under the covers with a flashlight.
The episode's climax is a emotional montage that shifts from Sheldon's lonely garage to glimpses of his future friends as children at that exact moment: young sheldon s02e22 1080p hd
The scene is tied together by adult Sheldon's narration (voiced by Jim Parsons), reflecting on how, despite his fears of being alone forever, he was "thankfully wrong". Reading a book (specifically Pride and Prejudice )