Coincidences don’t exist. Everything that happens to us is defined by what we have been doing in the past. Yes, I know, some people hate to think like this because it makes us accountable for our own lives and it’s scary. If you think that every decision you make today will take you to a specific future, you might just stop making decisions completely. The problem with that is that it’s a decision in itself. So, sorry, there is no way out.
Of course, other people just think coincidences are a way for God/the universe/the higher power to put us on a path to our destiny. This is a great way of seeing life: as we go about doing what we have to do, some coincidences tug on our sleeve to make us pay attention and marvel. But I don’t think this is at all what coincidences are about.
So to go back to my first idea, as we make decision in our lives some things start to happen and others disappear. For example, when I decide to stay home today instead of going for a walk, I might be the first one to see a job posted and apply right away to get the job I want, but I may not run into my friend that has gone for a walk also. The way to not freak out about how our decisions shape our future is to tell ourselves that no matter what we decide our future is being shaped everyday. So we can go about making the best decisions possible today and hope that our future is the one we desire.