My question is, what do I do now?
As far as I can see, I have 4 options;
1) Hold the Bitcoin
2) Invest in altcoins and leave a little in Bitcoin
3) Fund a project and start my own cryptocurrency that solves a problem that current currencies face (scalability, Tx fees etc.). With the funds, I would be able to assemble a team, start a marketing campaign, get listed on exchanges etc. I am also a programmer which helps.
4) Convert it to fiat (probably the dumbest idea)
Edit: I should also add, I dropped out of school and have all the time in the world so can fully commit to any idea. I will earn my living of cryptocurrencies.
A few people have asked how I made my money so, if you are interested, here is a short summary:
Initially, I put it all into Bitcoin during the massive FUD of the fork around June when Bitcoin dipped to $1,900. Then I put half my money into NEO before all of the hype at around $12 and cashed out at $40. Then I invested in a couple ICO's and turned a pretty good profit of off the hype. After that, I got back in on NEO as soon as China announced the regulations regarding ICO's and rode the wave back from around $20 to $40 (I can't quite remember). Then, I rode the hype of Ethereum Dark, eBitcoin and a few other airdrop scams (after bribing a few of the devs, I got massive discounts in comparison to market prices and drove the volume up on their respective markets to get them listed on coinmarketcap which catapulted their price). Finally, I got in on Wincoin before it got to coinmarketcap and turned a 20x profit.
To me you have a big money !! You can invest Altcoin for higher profit or keep BTC, If I have, I will keep 10 BTC and invest 2 BTC in altcoin.