The greatest thing to do is to hodl. Why? Because the price will go up.
When the time comes that there aren't enough satoshi's to go around, the Bitcoin core programming can be easily adjusted to divide satoshi's into as small of a unit as necessary.
Hodl the heck out of Bitcoin, and grow fantastically rich doing so!EDIT: Stop calling it Bitcoin, and start calling it SatoshiCoin, so that people get used to the idea of the satoshi as the main coin. This way we the bitcoin hodlers will gain more value, and SatoshiCoin will spread around the world greater than ever.
NOTE: At some time the divisions of a satoshi will need to be named. Perhaps we should call a 0.00000001 satoshi (a satoshi divided into 100,000,000 parts), a nakamoto.