Try to get familiar with your natural thought patterns. This is important because awareness has an incredible disarming quality. Next time you sing, the same thoughts might still surface, but the fact that you’re expecting them means that the element of surprise falls away, and so the thought loses power over you.
You might have promising music and loads of enthusiasm, but none of that matters much when you’re on stage for the first time and don’t know what to expect. Building performance experience can also give you more confidence and credibility throughout the booking process, and you’ll thank yourself later.