you need to trust every decisions that you've made so confidence can be brings out of you and you'll not be easily being move from any situations that you'll be experiencing from the market.
Still, complaining is the basis of human nature. As sure as anything, we will still complain later.
Quoting from someone,
it could be when the price goes down, someone needs money for his real life.
When things are like that, surely we will complain. Because it is a difficult situation to decide whether to survive in the current market conditions or out.