Will it rise soon or shall we sell?
Bitcoin's current price is low, but it will be a very valuable asset in the future. Bitcoin moves at its own pace its price will go down at times and up at times. We have to invest in the midst of decline and growth. To get success from Bitcoin we need to have a long term investment plan. Don't invest in Bitcoin thinking of temporary gain, invest the money you can afford to lose and hold it for long term, then success is sure to come.
Yes, since Bitcoin is volatile, those who invest only in the hope of short-term gains often get disappointed. The real success of Bitcoin will come through long-term holding, due to market volatility it is never possible to predict the price with certainty, that is why short-term holding is very risky. So long-term holding is the safest investment strategy, keep DCA consistent for the next 8 to 10 years, then success is sure for you.