var User = mongoose.model('User');

var user = new User();

user.email = 'swcharl@gmail.com';
user.password = 'test';
user.firstName = 'Seth';
user.lastName = 'Charles';

user.goals.push({title: "Hello, world!"});
user.goals.push({title: "Goodnight!"});

user.save(function (err) {
  // Did it work?
});