Buy bitcoins and keep them for a relatively long time. Fight with the temptation to buy more or get rid of the position until you carefully consider this decision. I have bought a significant amount and have been in position for more than three years. This tactic pays off, but more importantly - I'm not going to sell in the near future, because I am fundamentally confident in the long-term potential of this investment. I will consider selling my bitcoins in 2018 only if the rate exceeds $ 5000. Otherwise, I will keep my position at least until 2020.