You see what's happening there?
Often these qualities of firmness, intolerance or rigidity will be savers in human dynamics.
For instance you can be intolerant to abuse and that's good for everyone.
Or you can be intolerant to other people's religious beliefs and that's not good.
For these qualities the vital lights are
- Letting go
Flexibility is usually a good thing but when it comes for instance to payments agreements in business, firmness instead of flexibility might actually be a better option