Don't Worry About Your Neighbour
It's very easy to compare yourself to other people in everyday life. We're surrounded by fellow humans so our natural tendency is to see how we're doing in relation to others.
I'm here to tell you that if you can be aware of when you're thinking about what someone else has, and reverse or cancel out that behavior, your life will be much better off.
A couple thoughts. First of all, you can't control what anyone else does. You can only control you. So why would you worry about something you can't control?
2nd, you can never live that person's life or take over their body and become them so you can't take any negatives or positives from anyone else.
That's definitely a blessing when you think about it.