How about starting, or just reminding ourselves, to practice one or more of the following today?

PRACTICE GRATITUDE
Gratitude trains the mind to notice the positive things. We bring to mind those things/people we’re grateful for: this helps provoke positive emotions towards the past and also encourages positive emotions towards the future.

BRING TO MIND AT LEAST ONE GOOD THING YOU MADE HAPPEN/YOU BROUGHT TO YOUR OWN LIFE OR OTHERS’ LIVES/THE WORLD TODAY
Something minor or not-so-minor counts here: e.g. you brightened someone’s day; you achieved; you got through a difficulty; you were kind etc.

AT THE END OF EACH DAY, ASK YOURSELF “WHAT WAS THE BEST MOMENT OF THE DAY?”
When we make a point of looking for the best moment, we train ourselves to identify and notice such moments when they actually happen, since we’re actively looking for them, and as a result they’re likely to happen more often.

With practice, we can start to incorporate these approaches into our ‘modus operandi’, and it’s likely that this will impact on how we feel and behave, how we are and what we do.
These techniques also help us to recognise that we have some agency in how we feel and behave, we can make a difference, a self-determined change that we made happen.