Quick read on a 6: "anxious, indecisive, doubts everything." Each of those captures something real. Together they massively under-describe the actual workload.
Two threads, both running, both critical
The 6 isn't running one anxious process. The 6 is running two parallel ones. Thread A: "if this goes wrong, what's my plan?" — continuous scenario planning, contingency mapping, worst-case rehearsal. Thread B: "who can I trust here, and how am I keeping that trust alive?" — relational maintenance, loyalty work, vigilance.
“Type 6 is constantly running "if it goes wrong, do I have a plan B?" in their head.”
Either thread alone would be tiring. Running both, simultaneously, without dropping either, is what actually drains a 6. The exhaustion isn't "the worry." It's holding both threads at once.
Why this looks like indecisiveness from outside
When a 6 hesitates on a decision, they're not failing to decide. They're running thread A against thread B. "This option has the cleanest plan B but I trust the people on this other option more." The hesitation is the math. Most outside observers see the surface — "why won't they just commit?" — and miss the calculation underneath.
“What exhausts type 6 isn't anxiety itself — it's holding "trust" and "doubt" on two threads at the same time.”
When the engine helps, when it costs
A healthy 6 is one of the most underrated assets any organisation can have. They're the project manager who already had plan B ready. The lawyer who saw the clause. The teammate who quietly held the group together through a crisis. The cost: when both threads spin out of control, the 6 lands in chronic doubt — doubting plans, doubting people, doubting their own doubts. The structure that made them invaluable becomes the structure that won't let them rest.