Its better to wait and sell the dip before loosing hope in investing in crypto currency but i normally prefer holding my coin for a long time and sell later for a high price.Many people are scared of cryptocurrency investment simply because they believe that one can easily lose money there . The fact is that no one loses money in cryptocurrency unless he sells the dip.
Yeah , the dip may dip further but as far as it is a coin with good use case ,and you didn't sell the dip .you will recover your capital and profit once the bull seasons returns.
The only issue most times is that people buy shit coins which can easily be rugpulled and thus leading to a loss .