We all are moving fast through our days. Are you nice to the people who cross your path? You should be because how you treat people is what stays with them when they think about you.
The benefits of being kind outweigh the efforts you put in. Knowing this and acting on it will help you and your reputation.
In the same vein, do random acts of kindness. Bring in donuts (or maybe something healthier) to your office for your co-workers. Compliment someone. Be patient with those who make mistakes, whether a co-worker or the waiter or waitress at a restaurant.
Doing so is good for you in many ways. The feedback and reactions you get will brighten your day. What you do or say will brighten others’ days. Try it and see how good it makes you feel.