Cook the eggs: Place the eggs in cold water, bring to a boil, then lower the heat to a low simmer. Switch off after 8 minutes, leave in the water for an additional 3-4 minutes. Rinse under cold water and carefully peel.
Make the salad: Place the eggs with the avocado and herbs in a medium bowl. Add some of the lemon juice and some seasoning. Mash with a fork until chunky-soft. (I mean, if you want it to be super-smooth you can go there, but I like it a little more chunky.) Check for seasoning and adjust if necessary.