My mentor told me to stop using the same three fonts for everything, and it was the best push I ever got.
She said it last year after looking at my portfolio, and pointed out I only used Helvetica, Garamond, and Futura. I felt stuck, so I made a rule to find one new typeface for each project, starting with a branding job for a cafe in Portland. I found a great display font called 'Messina' that completely changed the vibe. Has anyone else had a simple rule that broke them out of a design rut?