The teams are in regular contact on the Web with about 120,000 K-12 students all over the country, who help direct the team's educational course each week. In addition, millions of students from all over the world visited their Web site during the Africa trip. Call people for lunch and ask them about what they do and whether they enjoy their work. These people become contacts in the future. Believe in what you know your strengths to be.
Graduate school can do a lot to undermine one's sense of self.
Don't expect tremendous support from your academic advisors. Go outside for this support. It's an impressive credential and more so outside academe than inside. Place yourself in the path of success. Don't pass up any opportunity to build skills, contacts, and expand your mind.