It is the day after Christmas, the Feast of St. Stephen the Protomartyr. He was the first person recorded to have died for the Faith.
Martyrdom has several connotations, mainly that of extreme belief. Either you were killed for your Faith, or you kill for your Faith (and in the process, die also). Christians in general get killed, and are not killers of others.
However, the idea is that there is something greater than yourself worth dying for. Something that you are willing to surrender your existence to.
The very notion is insane to those who hold that there is no absolute Truth, that Truth cannot be known and that morality is situational and relative to your circumstances.
I do believe that there are moral absolutes, and that Truth is a known (Jesus). This kind of certitude is a comfort, and in general renders me free from major fear and anxiety. Not that I am blissful and serene, but I roll with things a little more easily than most (except for certain small things that have a tendency to annoy the heck out of me).
I think that if you meditate on this notion, you gain a few steps in wisdom. What are you willing to die for? This assumes that you feel there is something you would trade your life for. This is a major step towards self-identification, i.e finding your true self. Once you identify your moral absolutes and discern what Truth is, you establish yourself in relation to those. How valuable are they to you? Is your life worthy of them?
Sometimes the chasm is very far to cross. That means that your instinct for self-preservation overrides your willful belief in Truth and the Absolute. The fear is too great. Faith (i.e. Trust) helps to fill in the chasm. A growing and developing Faith is necessary in finding who you really are, and in what exactly would you lay it all on the line for.
Something to ponder during the season in which we celebrate the nativity of Jesus.