How can I double my crypto stack?

Inquiring minds want to know - how does one embark on the journey to doubling their crypto stack? Given the volatile and complex nature of the cryptocurrency market, are there any fool-proof strategies that can guarantee a two-fold increase in holdings? Or are we to rely solely on the unpredictable whims of the market? Surely, there must be some tried and tested methods that investors have employed to successfully multiply their crypto portfolios. Could you elaborate on a few such strategies, while also cautioning against any potential pitfalls that one might encounter along the way?