If we try to discuss concrete ways to eroticise or handle pain.

Being well rested, fed, watered and having gone to the bathroom etc.

Theres being vocal, not so loud that your waking the neighbors but definitely a relaxation of the breath and voice allowing whatever sound to come out.

Also in being vocal dirty talk can help. Please spank your wet slut *gasp

Breathing deep or fast can help.

Staying physically relaxed, hard when you know the paddle is coming but necessary.

Starting gradually with warming up.

Being allowed to pleasure yourself throughout.

Music

Being insanely horny before beginning.

Imagine the very worst pain you possibly can then when the smack comes it does not hurt nearly as bad as you imagined

being tied down

ask to be allowed to choose what implement you use, know what is being used ahead of time, or have a calender or a set rotation you can reference

visualization, imagining a glowing line pulsing from your sore ass to your genitals and causing pleasure

affirmations like; this makes me fly, I feel love, I love ____, etc.

Im sure theres more but im getting tired now lol