Self-interested (adjective)

Motivated primarily by one's own personal gain or advantage.

Origin:

Combination of self and interested, meaning motivated primarily by one's own personal gain or advantage.

Examples:

1. His actions were self-interested and he only cared about getting ahead.
2. She had a self-interested attitude and never considered the needs of others.
3. He was criticized for being too self-interested and not thinking about the greater good.
4. She was considered to be a self-interested person and had a hard time building relationships.
5. He felt that being self-interested was not a good way to live and it was important to consider others.