As of now bitcoin prices never stabilizes because it fluctuates rapidly and it is the most volatile currency. If the volatility period of bitcoin is over, then it will become stable. Bitcoin price's high volatility is a result of uncontrolled speculation brought by both positive and negative factors. One possibility of controlling the price volatility of bitcoin is to put it under regulatory authority but that might not be possible because it is decentralized nature.
Trust with bitcoin is now common factor people have bitcoin they hold it and get profit form bitcoin, bitcoin is the best currency because in bitcoin a small patience can make you get huge profit and you investment will come out as multiplied with 3 or 4. Price use to increase and decrease it can never stop at a specific point ever, it use it go down for some time then move up again, and cross the previous level with each pump. So! No need to worry in any condition when you are using bitcoin as an asset or investment for your future.