What standard of prejudice must be satisfied to reverse a conviction due to counsel's violation of the defendant's right to testify?

QUESTIONS PRESENTED FOR REVIEW 1. What standard of prejudice, if any, must be satisfied to reverse a conviction because trial counsel violated the defendant’s fundamental autonomous right to testify? 2. Must waiver of the right to testify be clearly established as knowing and voluntary? If so, how might such waiver be established, and who bears that burden? i