Buy low and sell high. Except that I bought low, and it kept going lower and lower and lower, and I'm not supposed to sell until it goes high.
And this strategy is a feasible one in the current market circumstances as well. The prices are down. The market is cold and moving slow and the values of the top crypto in the market are a bit stable below the minimum values. Having said that, we can now think that investment in such a situation is actually of increasing return in future and you can later on trade your coins once the prices rise.