Precision should increase where consequences increase.

How exact you need to be is not a fixed personality setting, it is a function of what happens if you are wrong. A rough estimate is fine for choosing lunch and dangerous for a dosage. Treating all tasks with the same level of care means you are either wasting effort in the harmless places or under-spending it in the ones that matter.

Run a quick check before starting something, asking what the cost of being slightly wrong here actually is. Let the answer set your pace. Speed where the consequences are recoverable, real care where they are not, and be honest about which you are looking at.