Lifestyle Changes and TTC

When you were TTC your babies, did you make any lifestyle changes? My doctor essentially told me when I tried for my first to do everything as is until I get a positive test. I don’t remember changing much but my life was sooo different then it seems. Now I’m TTC #2 and I’m constantly battling with: is having a glass of wine a mistake, should I be in this warm bath, should I work out vigorously, blah blah blah... why do we overthink this process so much??