Dressing properly everyday, even at home
Started putting on a real shirt and pants every morning instead of lounging in sweats. Even if I'm just working from home. Something about it just feels right. Sets the tone for the day, makes me stand taller, carry myself different. My kids notice it too. Small thing but it matters.
I started doing this too and my wife actually commented on it. Small thing but it genuinely affects how you feel about yourself during the day. Can't be slouching around in sweatpants and expect to feel like you've got it together.