I usually get my cast iron skillet as hot as I can. Placing it in the oven beforehand works out best for me as my stove top doesn't get it as hot as I like. Put the skillet on the stove top, add Avocado oil, and throw the meat on. You have to dry the meat before you throw it on the pan. So you don't create a steam barrier between the skillet and the meat. You can also add garlic, tyme, rosemary or other items in near the end to add an additional flavor profile.
Also make sure to use an oil with a high smoke point.
Also make sure to use an oil with a high smoke point.