This principle works in all things. It is true, all we really have is right now. My husband worked with a man, several years ago. He was lying in his bed, watching television, when a car plowed through his room and put him in the hospital. He was never the same again.
The point is, one never knows what a day, an hour or a moment in time will bring us. I try to, not only, live one day at a time, but also never dread anything. Dread only adulterates the moment you are in. I'm not saying it is an easy accomplishment, but one well worth cultivating. It requires only mindfulness. Think intentionally and you can catch wrong thinking and change your mind.
Changing my mind, in this context, was a revelation to me the first time I did it. I have been on a diligent quest this past 14 months, my entire life really. A quest to be the best Sharon I can be. I am now at a stage in life where I'm seeing the fruits of all the work come together. Trust me when I say, I've been around the mountain plenty of times, taking the same old test again and again until I got it right. To be rigorously honest, it is still, and always will be, a daily practice.
Worry and fusing and making excuses, only prolongs the inevitable. We will either work through the pain to change, or we will stay in the pain terminally. Either way the days go by. Fantasize your highest self and take a step each day toward that fantasy. Hold on to it and watch it unfold before your eyes.
Matthew 6:34 "So do not worry about tomorrow; for tomorrow will care for itself. Each day has enough trouble of its own.