Are you going on stage soon?
Or have you just performed?
Maybe you're having trouble getting started?
Choose a situation where you desire positive energy - erase your negative, non-functional thoughts and replace them with functional thoughts that instead lead you forward. You can also listen to visualizations as mental preparation for different occasions.
The app contains six categories. Two visualizations and nine interchangeable thoughts in each category.

Open Stage & Mind counteracts stress, nervousness and poor self-esteem. The app is tailored for musicians but works equally well in many areas.

Open Stage & Mind works nationwide with support for young musicians. The goal is to increase well-being and mental balance and contribute to a sustainable entry into professional life. Primary areas of work are mental and physical health and hearing.
OSAM is run by the Swedish Orchestra Association and financed by Arvsfonden.
In OSAM, musicians, physiotherapists, ergonomists, mental coaches, health educators and hearing experts work.

https://www.bodyartmind.se/open-stage-mind