TLB is your Twitchy Little Bastard score. Mental toughness, AND high TLB is the difference between a reactive, undisciplined, five year old who cannot see past the next five minutes, and a person (whatever age) who can actually see and act conscious of the consequences of their action or inaction.
Tai Lopez calls these according to names of the Greek philosophies that reigned around the time of Seneca the Elder: the Stoics, and the Epicurians.
If you gobble up a cheese burger, you are an Epicurian who can’t see where eating that toxic stuff will leads you… fat, poor, sick, and wanting more.
If money burns a hole in your pocket… you are probably living the Epicurian lifestyle. You can’t stand not having your phone with you, ditto.