Invest like you're thinking that there's a brighter future with bitcoin. It's also fine to invest into altcoins but take note that not all of them are worthy to invest with your money. You have to be picky too in altcoins because there are many of those that are not just worth your money because they can just be a pump and dump token if you're not that good in picking. And for bitcoin, you can always think that the the history may repeat itself and we're likely in the beginning of a bigger price in the future.