Another good video by Charisma on Command, this time on how to increase your willpower. Unsurprisingly, he bases much of his argument on Roy Baumeister's great book Willpower (although admittedly, some of the ideas have come under scrutiny amidst the replication crisis in psychology).
Still very sound advise:
"Every day is a new life to the wise man."
The Righteous Mind
Star Slate Codex
Consulting by RPM