First cook two to three slices of bacon in skillet (can also be microwaved up to 2 mins for the less patient) If microwaving bacon, place slices on a microwave safe plate on a folded paper towel and cover with an additional towel. When removing bacon from microwave, be careful of scalding steam.
While the bacon is cooling, take one half of an avocado and slice thickly or thinly as is your preference. Place slices on one piece of bread.
Now take your bacon and gently fold it over and place it ontop of the avocado slices.
Place lettuce slices over bacon and close sandwich. You can add an olive (green or black) as a garnish.