When you’re creating a new password, pick something easy for you to remember but hard for a cyber scoundrel to guess. That means your birthday isn’t a good choice, even though presumably you can remember it on most days. Try your first car’s nickname or your height and weight combined. No, maybe not your weight. That could change.
Find more dubious advice in I Used to Think I Was Not That Bad and Then I Got to Know Me Better and I Didn’t Know You Could Make Birthday Cake from Scratch — both available on Amazon.