What would you do if you were a cancer patient with only five years at most?

If there is a countdown to my life, I will solve all the things I once regretted. I will die without regret, and then I will do what I yearn for, vigorously. I will never lie in a cold bed in a hospital and wait for death. Don't think I am selfish, so I won't do anything for my family. On the contrary, I want to take everything I can. If I can take away my footprints in the world, so much the better, leaving no memories.