I’m a 39-year-old single dad with $600,000 saved — I want to retire at 50 but don’t know how. What should I do?

Greetings!

I am a 39-year-old single father of one 16-year-old son. I have $70,000 in liquid savings, $530,000 invested in individual retirement accounts and owe $210,000 on a home worth $500,000. I also owe about $20,000 on my car.

My take-home income is $7,200 per month and my monthly expenses total about $4,000.

I…