The biggest asset that you have and the one that can create the most money for you is yourself.  Yeah, that sounds really cheesy, but you've already showed that it's true.<p>Invest the money in yourself.  Bank it and use it so that you can ensure that you aren't going to need to spend your time making somebody else money in the future.<p>Some people have said to invest it in companies...the thing is that <i>you</i> are a company and it sounds like you're a pretty profitable one.