I feel your pain.
I also have problems to make myself take shower.
But I found for myself some solutions:
1) I bought better shower head,
2) I put nice music near the door to the bathroom (on the other side of the door in order not to destroy loudspeakers with humidity). I am listening to Donavon Frankenreiter (sweet lyrics and relaxing sound)
3) I create dimmer light atmosphere (somehow that way shower become more enjoyable to me). I only turn on the mirror light
4) I put towel close to the shower curtains, so that when I finished showering I do not step out of the showering cabin into the colder air but dry myself inside the cabin where the air is still warm.

Hope of these tricks will help someone else

cheers!!!