Today is a gift, that's why they call it the present. I find that by staying in the present it's easier to stay positive. For me, anxiety can creep in when I think about the future. For example, an upcoming road trip, or a doctor appointment. I'm not there yet, so if I put it out of my mind until the actual time arrives, I feel less stressed. Also, anxiety can creep in when I think about the past. I can't go back and change things, but I can change my attitude about it. I just tell myself that, "I did the best that I could, with the knowledge I had, at the time."