Sometimes, people have more of an advantage then and can get ahead easier, But if you care about someone and being kind will close the gap.
Kindness is underrated because the cost is $0.00. If you have that kindness in you, don't let anyone tell you that you're too positive and not realistic. My intuition says that people being kind and doing the right thing will always have the advantage.
When I was 11, I would go to a friend's house. My mom would always say: "always say please and thank you, and say hi to the parents! Also, make sure you always make an effort to ask if you could help in any way."
I have taken that advice and have carried it throughout my whole life. I genuinely believe that if you are kind to everyone and ask them, "how was your day and care about what they have to say. You will create a relationship more valuable then subtle hi every day. The ROI will be in your favour.
The BIGGEST example of this is, take the two most prominent coffee shops in Canada. Tim Horton and Starbucks. Starbuck customers come back for that one barista(s) that turned there day around and remembered their drink. There is something more than just the sale. Tim Horton's tries to give the same experience, but just not as good. Tim Hortons relies on the quality of the product to carry there brand. That can be risky business because even if the coffee turns out to be a bad batch, the relationship will be the one to bring you through.
The PUNCHLINE of this article is that you are binary.
People either see you as a good person or a bad person, and you have the power to decide that.