Age is just a number. What defines your seniority is your RESULTS ! What have you achieved in your life and at your age. If someone younger than you has more result, they are your senior, and you are the junior, even if your physical age is older.
Its easy to make excuses as to why certain situations hold you back, it’s harder to get off your butt and take action. But understand that there’s always somebody who made it out of a worse situation than you.