For our Still in the Game series, Business Insider has been interviewing and surveying people in their 50s who are navigating career changes. As we’ve shared their struggles and triumphs through unemployment and career pivots, we’ve heard from more than 100 readers via emails and comments, many expressing the same sentiment: “Thank you for showing me that I’m not alone.”

While looking for work or starting over at any age comes with challenges — especially after spending decades building a career and in the current difficult job market — some of those challenges may come as a surprise.

In Still in the Game , Business Insider is chronicling the…