Temporary dips are very common in bull runs, that's the way the market works. After a big run there is always a small correction, and after that comes the next run. Don't be afraid and hodl your coins.
Yes. The people shouldn't worry about the market going down especially if they don't need money yet. The best move if the market goes down is to keep buying more coins and hold again and wait for it to become profitable.
I agree on that price is really important. Being temperate about the price is the beat thing to do, if the price rise up high we really need to sell for good while if the price fall we don't have to get worry in fact we must be happy on that droping of price because that was a big opportunity to buy more bitcoin. If we are going to buy in a very low price we need to hold it for a long term to get a huge return of our investment.