Professions received a major overhaul in Dragonflight — introducing Knowledge Points, Profession Equipment, Inspiration, Multicraft, and more to Retail's profession system. While many of these additions have stuck around in The War Within, Inspiration has been replaced with Concentration and Ingenuity.
Concentration is a brand new finite resource for crafters. Every profession comes with 1000 Concentration that is unique to that specific character and their profession. This means that if a player has Enchanting and Tailoring, they will have 1000 Concentration for Enchanting and 1000 Concentration for Tailoring to use independently.
Players can choose to use their Concentration to improve the quality of their craft to the next best tier. For example, if a player can only craft a Quality 3 armor piece with their current Specializations, they can choose to use their Concentration to improve the craft to Quality 4. The amount of Concentration needed to improve the craft depends on your Skill level and the Quality level of the item. Using Concentration at Quality 4 to reach Quality 5 will be much more expensive compared to Quality 1 to reach Quality 2.
Concentration slowly recharges every few minutes. Currently, players will receive 1 Concentration every 6 minutes, or 10 every 1 hour.
Concentration Takes 100 Hours to Fully Recover in The War Within
Spending Concentration is costly, however, Ingenuity allows players to have the opportunity to receive some of their Concentration back. Players will gain points in Ingenuity through their Specializations and Profession Equipment. These points translate into a % chance that players can proc when they spend their Concentration, causing an Ingenious Breakthrough. By default, a breakthrough will refund 50% of your Concentration used on that particular craft. For example, if a player spends 250 Concentration to improve their craft and Ingenuity procs, they will receive 125 Concentration back.