Wilhelm Steinitz became world champion at 50. Your good years are still ahead.

Comments on https://adjva4.dpdns.org/@/jedidiah932/blog/wilhelm-steinitz-became-world-champion-at-50-your-good-years-are-still-ahead/04gPZX38

Reprintsev became GM at age 66. https://adjva4.dpdns.org/@/tpr/blog/reprintsev-wins-direct-gm-title-at-age-66/B7Yb7oaW

Lasker won New York 1924 at age 56: https://www.chessgames.com/perl/chess.pl?tid=79245