What's a small daily habit that changed more than any big decision ever did

[TheGame_Fan]

Big life decisions get all the credit but a lot of people say it was some tiny repeated habit that actually moved the needle, things like drinking a glass of water before coffee or writing three sentences in a notebook before bed. Curious what yours is and roughly how long you kept it up before it stuck properly, since most habit research puts the real automaticity point somewhere between two and eight months rather than the often quoted 21 days.