It represents an anti-value, that is, a feeling or conviction contrary to what values represent in our conduct and life. This is how selfishness means that thought or feeling of excess love that a person can develop about himself, making that self-interest not allow him to be interested in or watch over others.
Selfishness invites you to use things around you always for your own benefit and taking care of your own interests, regardless of the people or what may be affected by your action.
This is how selfishness as an anti-value represents the counterpart of altruism, which represents the sacrifice that a person makes for their own well-being, for the benefit of other people.
In addition, he also opposes the values of sharing, solidarity, friendship, these being followers of the interest for the common welfare, that is, his own and that of all those around him.
That selfish person puts aside the likes, opinions, interests and even the needs of others, which often makes it difficult to have a good relationship with others who are affected by their selfishness.
There are several perspectives on selfishness. In the first place, there is rational egoism, which is one in which the individual always works at his own convenience, leaving aside common sense, when passing over others, to fulfill his own objectives.
In second place is the ethical egoism, where the person provides "help" others, motivated solely by the interest of getting something in return, they benefit and therefore can get advantage of the situation
In second place is selfishness defined by the Bible, which presents it as the anti - value of humility, saying that it is opposed to love of neighbor, which is preached in the Christian faith.
Finally, there is egoism defined by psychology, which says that egoism represents that behavior of self-interest and can trigger egocentrism, which is when someone is unable to put themselves in the shoes of others and asocial behavior, which is that disinterest in the environment and integration into a social life.
From any point of view, selfishness represents behaviors, thoughts and a negative feeling.