Do you ever get a tune in your head that you can't get rid of when it becomes annoying? Compulsive thoughts, which we do not even realize many times, dominate us more than we would ever think. Thoughts such as injustice, confusion from work, unpopular politician continually creeping into our minds, creating that mood without us even realizing it.
I'm a great-great-grandson of Karel Jaromír Erben, famous Czech writer of 19th century. It cost me a bit of looking at the dies, but I got it. If that destined me for anything? Hardly. On my ancestry, it is beautifully confirmed that any genes we get mean nothing at all.