We all know what the literal definition of a martyr is. Not many are called to willfully die to communicate a message. All Christians are called to stand for their beliefs at any cost (which could be our life).
The Martyr, I speak of, is the person who always goes above and beyond to make sure everyone is taken care of. Now, this sounds like a noble behavior, but it often comes from not feeling worthy to receive help, blessings, or compliments.
The Matyr is easily distinguished in any situation you find yourself in. This person will be doing everything and starts to resent people around them for it. They will feel unappreciated, unnoticed, and taken for granted. When The Martyr is feeling resentful, they will make jabbing remarks to the people they do things for.
They often are characterized by having a void (neglected in basic emotional needs) from childhood and want to be noticed for all the good things they do. It's as if they think they can get love from doing "things." They fall trap to putting everyone first and performing acts of selflessness as a means of creating their value. Their value was already established before they were born.
Martyrs are good souls that truly want to give and receive love, but they have it all backwards: God's grace, love, acceptance, and forgiveness are free gifts.