Law of impenetrability

When I was in high school I liked to much the law of impenetrability which says that no body, particle, etc can occupy the same space at the same time.

Nowadays I'm passing by a situation in which I feel some kind of envy with some of my partners. This isn't first time that I feel in this way. I think many times I have felt those type of feelings in my life. I´m not trying to justify myself but inside of me I have fear because it´s so difficult to get a job nowadays and I feel much competition everywhere.
Today while I was walking I thought that the only place where anybody can feel safe and without competition is in our own way. Just like in the law of impenetrability. Nobody can occupy your place in this world.
I think that if I´m in my own way, if I can recognize which is my own way I will feel just like in home and I won´t feel any envy or things like that again.
It´s so simple but it requires a lot of work from myself, especially to keep in mind all this everytime I feel envy or insecurity about my future related to working life.