Your pace should serve your purpose rather than become the purpose.

A pace is a means. It is chosen to suit what you are trying to do, and it should change as the work changes. What often happens instead is that the speed becomes the identity, so slowing down feels like a loss of self even when the purpose no longer requires it. At that point you are serving the pace rather than the other way round.

Ask what your current speed is actually for. If the honest answer is that it is simply what you are used to, you have found something worth adjusting. Let the aim set the tempo.