Activities
Here are some activities/ habits that Wednesday is involved in that you can realistically mimic :) this list does not include wandering through the woods and discovering murders unfourtunately because realistically thats not very safe and Wednesday is not a simple human like the rest of us.
Music
Wednesday frequently practices her cello but not to be in an orchestra or to be the best, but to help herself express emotion. If you already play an instrument you can try to reframe your mindset to "this music is helping me feel my buried emotion of _____" or "this piece is challenging me which is helping me learn _____".
if you do not play an instrument you can start learning to read music and work on your voice or find an available instrument at your school or institution and just mess around, one of the best ways to learn music in my opinion is to become familiar with the instrument on your own and figure out what sounds good, reading music is a valuable skill but lessons are expensive and attention spans are low and in the end, its nice to be able to sit down and just riff. It frees you from being dependent on music to play.
Writing
In the show Wednesday specifically mentions that she dedicated one hour a day to writing in her novel. One hour might be a bit much for the modern day american, plagued by the pressures of modern society to be constantly "productive", but even if its just journaling, writing for a few minutes a day is actually very good for your mental health. Wednesday was onto something!!