It doesn't mean the price wont change forever or it will go up or down as long as it wants, the most important trait for you is to control your emotion, over excitement can sometimes lead to a big loss, how much more those who feel down when the price starts to drop low? let's be patient for a while and wait a little longer.
Yes, that's true. Consider these as long term investment and be patient enough until it reached its maturity or until the right times come wherein the value is doubled, tripled or even ten times of the value invested or until it reached the value desired. Remember the previous price of BTC way back 2009 wherein Kristoffer Koch bought 5,000 bitcoins for only 27 dollars, basically nothing in terms of value but look how much is the price of that 5,000 bitcoins nowadays,? About 56,400,000 dollars, he even forgot about his investment until bitcoin’s wild price swings by 2013 resulted in a slew of articles about bitcoin.
So, don't do panic selling and no one can tell what happens in the future. Let us learn from others' experience.