Wash all vegetables thoroughly under cold water.
Chop the lettuce into bite-sized pieces and place in a large salad bowl.
Slice the cucumber into thin rounds and add to the bowl.
Julienne the carrot and add to the salad mixture.
Dice the bell pepper and toss it into the salad bowl.
Halve the cherry tomatoes and mix them in.
Thinly slice the red onion and add for a zesty flavor.
Dice the avocado and carefully fold it into the salad.
Slice the olives and sprinkle them over the top.
Drizzle olive oil and lemon juice, then season with salt and pepper. Toss well to combine.