Does discipline hold back talented people?

High talent with low discipline has a high failure rate.

If you have higher talent, discipline is (1) a safety net to prevent over-reliance on talent that leads to eventual failure and (2) an enhancer of talent and accelerator of performance.

High discipline with low talent has a high success rate.

If you have lower talent, discipline is (1) the primary source of performance and an absolute necessity for success and (2) the best resource to compensate for lack of talent.

High talent with low discipline has a high failure rate.
High discipline with low talent has a high success rate.
High talent with high discipline is a recipe for domination.

Answer the call. Do the work.