I am relatively new with regard to bitcoin but what I have noticed is that a lot of people just invest on it and then cash in when they feel like it is already enough to make a profit. I do not think that this will not be great in the long run because of it being unstable. So what can be done to make it stable?
Only centralization and manual control of its price can make Bitcoin stable in price. However, this is unacceptable for Bitcoin, since one of the fundamental principles of its existence will be violated. Therefore, unregulated bitcoin will always have high price volatility. Moreover, the higher its price, the greater will be its volatility.
It means that nothing can be done to make it stable. Actually, traders are not eager to see Bitcoin stability - how will they make their operations to get profit if it happens? The volatility of BTC is its main feature.