A small corner of my lawn has gone bare (see attached picture). I wanted to know if I should wait it out hoping that adjacent grass will start growing in spring and slowly cover the patch. Or should I put seeds there to grow the same grass variety or do something else. Note that I live in the San Francisco area where we had a drought last year and had to cut down on watering.
I would think you don't have to do much to restore this. Scrape the surface to reduce and remove mosses, sow some grass seeds, cover with sand or a light dusting of soil, taking care to keep these well watered during germination and their early stages of growth. Don't cut with a mower for a while until well established, use shears on this small portion, even though it may look slightly untidy.