No, to mummify yourself properly, you'll need over 2,000 days of preparation. Here's how to do it, the Buddhist priest way:
First we've got to get all of the fat off of your body. They did this by changing their diet to just nuts and seeds. The priest could eat nothing else for 1,000 days.
Next, we need to remove as much moisture from your body as possible. Since your body is mostly moisture, this may cause you some discomfort. The priests would eat only a small amount of bark and root from pine trees, for another 1,000 days. Then they'd drink a special tea (and by "special" we mean "incredibly poisonous") made from the sap of an urushi tree.
If the tea causes explosive diarrhea and vomiting, you'll know it's working. Again, this will reduce the amount of moisture inside you, but more importantly the sap will soak into your guts, lining them and thus protecting them against maggots.
Next you'll be sealed in a small, stone room--just big enough to sit in the lotus position. You're done! Now you just have to wait to die!
Dear God, Why?
This was all tied to the Buddhist idea that to achieve enlightenment, you must separate yourself from the physical world entirely so that at death, instead of being reborn, you become one with Buddha. That's why 1,000 days after they finally keeled over in the stone room, a crowd would gather to peer inside, seeing how the mummification went. Most of the time, it didn't work.
If the priest had successfully mummified himself, he would be revered as Buddha, and presumably everyone would have a massive party to celebrate, and they'd gorge themselves on shrimp and tiny cocktail sausages. Except for those who were already well on their way to self-mummification. They'd have the nut roast.