An interesting exercise is to pay attention to your thoughts- the running chatter that accompanies you throughout your day. Are most of your thoughts about worrying about the future? Are you judging yourself or others? Are you busy liking and disliking things all day long? Listen to the tone of your self talk- are you berating yourself for not getting enough done, or are you cutting yourself some slack? Or are there times you can just accept what is and find compassion for yourself when you come up short. Are you as kind to yourself as you are to others? Peace of mind is the ultimate goal.
There are times when you have a choice about how you react to events. Say someone takes your parking space in a crowded parking lot. You could get mad, and that would probably be your first reaction. But you could decide to laugh instead. Laughter Yoga is wonderful training in changing the way you respond to frustrations. You can't change the situation, but you can change how you choose to respond.