Stay calm, play dead and keep your eyes open for attractive valuations. A bear market can easyly make half from your portfolio and the worth thing that you can do is a panic sell.
This is somehow not possible for the newbies in the market and it is not possible for them to stay calm and wait for the market recovery. They rather sell low due to panic and this leads to loss. What a rational man should do is to hold the coins and wait for the market recover as the market recovers at some point in time like it started recovering in July.
Moreover, we have an element of stability in the market right now and the price is also expected to rise, so it is a wise decision to invest and hold when the market is down.