Lust, desire, and envy are all attributes that have prevented us from becoming a successful as our potential might have reached, so we must mind a way to suppress that emotions to become more successful. Though a person cannot truly eliminate their lust, desire, and envy, they have the ability to suppress it into a state that is much like it has been defeated. To achieve this, a person needs to be content with what they have at the moment, not care about what the other person has, and simply ignore anything that might make them feel this.
To be content means that you must be happy with what you have already and not want more. The moment there is the feeling of want, then you might be steered into a direction that is not beneficial for yourself and other people. You must think that you have enough already and everything else is just a bonus and not mandatory. Once you know how to be content, then you will be able to become more prosperous.
Once someone doesn't care, nothing will be in their way because they simply don't care. Also if you ignore a conversation that might relate to things to make you envious then you won't be exposed to those things and therefore no harm will come.