Forget about the partner that owes you money from a previous business, or the enemy that slighted you in public, or the opportunity to earn commission on the side, or the million other things that are not your mission.
Forget about politics, or global warming, or the stock market, or the price of petrol, or a million things that are outside of your control.
Everything that is not your mission or outside of your control is a distraction.
Avoid distractions.