If 20 people give you $1,000 each totaling $20,000 and you just know you can make $50,000 by holding it for X amount of years thanks to the economic gods, what

If 20 people give you $1,000 each totaling $20,000 and you just know you can make $50,000 by holding it for X amount of years thanks to the economic gods, what happens if your $20,000 suddenly is only worth $5,000 thanks to you having to sell said asset much sooner than you would like? Now you know why.