It wasn't a surprise because bitcoin was close to $50k price for a couple of weeks but will it be stable there ?
During the next week will the price be heading downward because of sellers making profits or is it going upward when the next price to generate media interest will be $75k ?
It's difficult to work out if it's going to stay stable at $48k - $50k
If you're thinking of much bigger profit, then it becomes sustainable knowing that the capability is high. However, there's no assurance if you have to look over traces of historical data due to volatility of the market. Today we're going to enjoy the expensive price so you'd sell profitably, but suddenly collapses. Long term goals is very important in bitcoin, along with emotional connection.