This is the goal. When you succeed, don't get swollen with pride. When you fail, don't crumble into depression. Maintain a steady, calm center.
"Karmanyevādhikāras te mā phaleṣhu kadācana" gita on karma
Krishna warns against using detachment as an excuse for laziness. True spirituality involves performing one's duty with full dedication. The Three Types of Karma Karma yoga life lessons from Bhagavad Gita - Facebook This is the goal
The Gita does not promote laziness under the guise of detachment. In Chapter 2, Verse 50, Krishna says: Maintain a steady, calm center
When you detach from the result, your mind becomes calm and focused. Without the noise of “What if I fail?” you can see the situation clearly and respond with intelligence rather than react from fear. A surgeon does his best work when focused on the incision, not on his fee or reputation. A musician plays best when lost in the music, not in the applause. This is Karmayoga.
Because you cannot escape action, the Gita argues that you must learn to act in a way that does not create further bondage. 2. Nishkama Karma: Action Without Desire