I, in fact, did have an "aha" moment, but my own life shifted not when I realized what it was I wanted to do as a career, how I could turn what I love (cooking) into what I live on a daily basis (chef and cookbook author).
Tiny urges are there to guide you to your truth. The fact is, your purpose may not be to paint or become an artist, but the act of painting may allow your mind to shut off long enough for you to hear your truth.
The level of guilt we feel often dictates the length of time we take to get over what ever it is we have done. Some people, even though forgiven by those they have wronged, never forgive themselves, making every tomorrow a yesterday before it even happens.
While my previous travel adventures, like backpacking for a year after college around Europe, Northern Africa and the Middle East had been quests to find myself, this trip was the polar opposite: I wanted to lose myself.