A person who invests in Bitcoin should be patient. But you don't have to be patient. When the price goes up a bit, it may make sense to sell. Because there is no continuous rise. Selling before prices go down makes you profit. Thought the prices can buy again.
Well it depends on your strategy, we dont necessary need to wait longer when holding bitcoin. If you see the price is increasing then sell and take profit, buy back when the price decline. But some investors prefer to hold for long period just like me because its less stress in my part.
When it comes to altcoins I chose to hold for long term but it seems I made the wrong decision because I missed the chance to sell when my assets has still a good value. Now im waiting for the price to bounce back again and hopefully this year would be good for alts.