Learn about antibiotics before you need them. Keep a few reusable diapers around for cleaning up spills. Turning pants pockets inside out before washing keeps them from wearing out. Soaking in cold water overnight works on most stains. Red children's clothing always seems to bleed color in the wash.
Kids are much easier without deadlines.
Minimize the number of crunches in your daily schedule where you have to get your kid out on time. Don't rush walking and don't use walkers. Backpacks are great. Always have an extra layer of clothes with you. Corn starch is good for rashes.