Place the chicken breast or pork shoulder into your crockpot
Pour in your salsa (I like to put a layer of salsa on the bottom to prevent burning) and taco seasoning
Set crockpot to low for 8 hours and let it do it's thang!
Once the 8 hours is almost up, make your guacamole. Split avocado(s) in half and place flesh into a bowl. Add in all of your seasonings and smash with a fork until desired consistency/taste. Place in refrigerator.
Once the 8 hours are up, use 2 forks to shred the chicken or pork. Taste, add more taco seasoning or other spice as necessary.
Warm up your corn tortillas on the stove and top with chicken/pork, cabbage, guacamole and any other toppings you like!