I regularly ask my violin students to stretch far past their everyday boundaries.
Sometimes those lessons produce an unanticipated effect. A sense of overwhelm. An unanticipated jitter. Even an unexpected welling up of tears.
The results, even if less than perfect, are irrelevant. It is the resolve to pursue the path and the will to endure your inner resistance that is transformational.
That’s the whole point of undertaking the violin journey.