Here are some changes you can make:
dietary: become a vegetarian or vegan; give up gluten
you can decide to give up a relationship or even a casual acquaintanceship that isn't helping you
you can begin a practice of something and do it every day for a month, like playing an instrument or drawing
you can stop doing something you feel you need to do, but that you don't really need to do (if you go to 4 conferences a year because you feel that need, but maybe 2 is enough?).
you can retire or quit or decide to look for other job
I don't recommend giving up things that you really love as a faux-askesis. It is better to bring more rather than less pleasure into life. The breakfast salad movement is all about aesthetic pleasure, not giving up on pleasures. The breakfast salad can have potatoes or bacon, or anything else you want. It should be attractive and offer a wealth of contrasting and complementary flavors: acid, sweetness, the fattiness of an avocado. Want you want to avoid is "pleasure" that really actually dulls the senses rather than heightening them.