CHARLOTTESVILLE — The holiday season can be a time for reflection and introspection, and for one young man, it has proven to be a humbling experience. David L. Sinclaire, a student at a local university, realized that when it comes to his investments in the volatile cryptocurrency market that his mother was right all along. One year ago, when he was high on money, Mountain Dew, and alt coins, David brushed off his mother's advice to take some profits and instead doubled down on his inves...