I did not think of the positive aspect of "living in the moment". Honestly, I started the thread after a younger relative tried to justify a bad behavior. He said something to the effect, you only have one life, gotta live in the moment yada yada yada.
Another relative that smokes, I tried to tell them to think long term. You may not see the consequences now, but you will likely see it in the near future. Thinking long term (as opposed to living in the moment) in this case helps to reduce harmful behavior