That could be a lot of money make sure to used it properly. I myself was also too jealous of you luck really comes to a person once so better make used of it. I advice to sell it little by little or if you still belives that the price can go higher then be more patient in waiting
Yes you are lucky only few experience that kind of thing like yours. But you must not forget to thanks for those who helps you to become a millionaire. Selling it little by little was a good idea so that if the price pump you may earn more. Also try to used some it in sharing to other people especially for those who needs money like poor people.