I, personally, like to take the opportunity to express aspirations: not just trying to stop doing things I feel are harmful, but also to try new things or practice positive things more. A couple from me:

• Avoid sarcasm when dealing with people, especially strangers, it does not go over well when they don’t get the joke
• Do something positive, helpful, and non-criminal to counter the right wing political trend. (granted, this one needs more detail)

How about you?