Don't look down on those who are less "blessed" than you. I don't use the word "fortunate" because that means you deserve what you have. Respect the fact that you are in a "blessed situation" because of the sacrifice and giving of someone else other than you.
Parents, grandparents, relatives, and even people you do not know have made sacrifices in one way or another that have effected your situation for the better. Just as you can be held accountable for the shortcomings of your ancestors, you can also be "blessed" by the favor of your ancestors.
Don't speak harshly of those who are less "blessed" than you because you have no clue of the sacrifices they have made and may be making so that their descendants can be "blessed" like you someday. Honor and respect those that have made it possible for you to be in your "blessed situation".
Don't bad mouth them in the absence of their presence. This only causes others to dream up undeserved bad feelings in their minds against those who have blessed you. Someday while looking down your nose at someone less blessed than you, you may see someone doing the same back at you because of your negative attitude. What goes around comes around. It's not karma, it's just logical.