“Time,” has been of interest to philosophers for ages. Everyone eventually ponders it. Some say that time does not exist, and others say that time is a measurement of change. And myself? You could say that I believe in Presentism. I do not think that there is a timeline that is laid out that we can travel upon to and forth. There is no evidence that the present continues to exist after it has passed (would then be labeled as the past). And there is no evidence that the future exist before it comes into present. Therefore, I think that there is a greater possibility that there is only this moment, and the contents of this moment simply keep changing. In relation to what you are saying, I would agree that it is in your best interest to be “aware” of the moment.

On thing to help realize our now-ness is to acknowledge our inhales and exhales. We are breathing all the time, so much that it is instinctive. We don’t have to think about it. But if you stop, and realize that you are breathing, become aware of your inhales and exhales, it helps to make you aware of the moment. You are here, now, alive, and aware.