Cut the avocado in half and remove the pit. Using a spoon, remove the flesh from the skin into a small bowl. Add a good squeeze of lime juice; press the garlic in a garlic press over the avocado and then add a pinch of salt. Using a fork, mash the ingredients together until well combined. Taste, (I always find it best to taste with a tortilla chip, since that also will add flavor) and adjust - add more lime, if you like, or garlic, or salt. Serve with chips, add to your taco, or however you enjoy guacamole.