If I see myself as a busy professional I might be much more aggravated by someone at the grocery store holding up the checkout line with EBT (since I am busy they must be lazy!). If I see myself as a social climber I will always be worrying if people are using me for something (since I am using them!). If I identify with my wealth I might develop some neurosis regarding the sight of the homeless (since they represent ultimate failure!).
I don't believe in reincarnation but it is a helpful thought experiment to think about what benefits and drawbacks your particular incarnation of life holds and how those might be different if you were incarnated elsewhere.