Ask HN: I sold my company last month for $5m. What do I do with the money?

I'm a 20 year old guy who sold his company last month for $5m in cash. I really don't know what to do with the money or how to manage it. I never gave it a thought and now suddenly I have $5m. Hacker News, please help me out. Should I deposit the money? Buy stock? Or what the heck am I supposed to do with it? I am just a regular guy who spends around $3000 a month. I don't buy fancy stuff and now suddenly I have more money than I can ever spend.