This picture holds a lot of value to me. There is a lot more to this than just a simple exclamation point. In many video games I play quests or missions are represented with exclamation points. In life the exclamation point represents a sense of urgency just like in the games. Sometimes you may feel like you are not ready, but you must take on the challenge anyway.
http://geektownshop.spreadshirt.co.uk/kid-s-quest-giver-tee-A13032808. This picture comes from a T-Shirt created about Blizzard’s World of Warcraft.