Many things are common sense. Many common sensical things are oft forgotten.
For instance, decisions. It seems like common sense that we cannot decide our futures in just one day. Yet, if this is so matter of fact, why do we feel the weight of the future in every decision so often during this time, our 20's? I do not forget that I am the sort of personality that feels anxiety about these things, especially prematurely. Some people are more successful at being chill. All I can say is that I'm trying to take things one moment at a time, to do an adequate amount of planning and preparing, and a moderate amount of kicking back and basking in the now.
We don't decide the rest of our lives in one day. Instead, it is everyday that we make decisions that shape the rest of our lives. Little by little, moment by moment, we carve out our place in the present and those little channels we dig lead us to the opportunities of tomorrow.
Today is for eating healthy food and reading good books. Tomorrow I will pick up where I left off. The next day is determined by the day before.
Many movies and books feature versions of this theme. Butterfly Effect, and that one with Nicholas Cage. But, oddly enough, the one that I think is on the right track is actually Click, because it was once the remote figured outt what Adam Sandler's character would do in certain situations, it just kept making those small decisions for him. It was the summation of those minute decisions that delivered unto him the most undesirable life. Something to keep in mind.