Science fiction is any idea that occurs in the head and doesn't exist yet, but soon will, and will change everything for everybody, and nothing will ever be the same again. As soon as you have an idea that changes some small part of the world you are writing science fiction. It is always the art of the possible, never the impossible.
If you want to lose 40 pounds, you order salad instead of fries. If you want to be a better friend, you take the phone call instead of screening it. If you want to write a novel, you sit down and write a single paragraph. It's scary to make major changes, but we usually have enough courage to take the next right step.
As I get older, my perspective changes, and I just see how relationships aren't always what they appear to be. It's one of those sad but true things. We can see sometimes when people are becoming distant in all the things that create breaking apart, as painful as it is, and at the same time, still appreciating that person.