Keep accumulating over the long term by buying at dips. Always keep spare cash to buy the dip just in case one occurs.
Analyze the market and look for opportunities when you can take out the profits.
With those profits, keep buying when the market goes in a down trend. Patience is the key.
You will feel many times to sell as soon as you see some profits but hold you way until the market goes in opposite direction on bigger timeframes.
Accumulating is something everyone should do, but unfortunately not enough people do it. When you see bitcoin go down 50%, that is exactly the time you should buy as much as you can. That means if we end up with something then we are going to end up with a good return, but if we just keep on waiting or try to trade during these markets then we could very well end up with a loss, or at least miss out on a profit. That's my approach, I accumulate as much as I can, to be fair I do not have near the levels of bitcoin I would love to own, but that's fine, at least I am trying to accumulate more, and I know that this will return to be something awesome for me one day.