Every time bitcoin has a price drop, everyone is saying that bitcoin is dead, but then it returns every time stronger than before.
As already happened in the past

That's always happened they are aavance thinking but their think is negative. There is no time to be negative in crypto community because there is still have people now undecided to invest their money and if they see the negtive maybe they will not go and they did not invest or backout because of that. Once the bitcoin decrease I hope everyone say bitcoin will rise this dump is only temporary.
If your thoughts about cryptocurrencies are negative, then you cannot survive in the current challenges in the market. It is important to set our mind to become positive always for us to manage well our decisions.
Sometimes thinking negatively will make you look for alternatives and contingencies which may save you in tight situations in crypto. But in general, i agree. You have to have the right attitude to be successful and one thing is you have to believe in what you're doing. Bitcoin has proven detractors wrong several times in the past and as far as i'm concerned, it's not done yet.