According to Michaël van de Poppe (@CryptoMichNL), maintaining a relaxed approach towards cryptocurrency investments is crucial, especially when heavily invested in altcoins. He shares his personal strategy of being all-in on altcoins while managing Web3 companies with significant fixed costs and responsibilities. Van de Poppe suggests that if he can manage such a portfolio alongside his business ventures, individual investors with regular jobs and crypto investments should also be able to handle market volatility. He emphasizes the importance of patience in navigating the crypto market.