When life gives you lemons, don't make lemonade.
Collect the seeds from the lemons to make a lemon farm, then harvest and sell those lemons to eventually make a decent profit and a lemon company. Then, get rid of everybody else's lemons and genetically modify your own to create something that kills the rest. Then at the end, make lemonade stands all around the world by your company. They will have no choice but to buy your lemonade, because that will be the only lemonade available.
But, when life gives you limes...