DEAR ANNIE: I recently made a significant career switch at the age of 45, moving from a stable position in finance to a more creative role in graphic design, which has always been my passion. I’m excited about the change, but I am also struggling with some anxiety about competing with younger, more tech-savvy designers. I’ve been staying late nearly every night to master the new tools and techniques, which is taking a toll on my personal life and overall well-being. Do you have any advice for navigating this new chapter in my life without burning out? — Midlife Career Changer DEAR CAREER CHAN…