I have successfully potty-trained eight of my children, as well as three of my siblings, while they were between the ages of 22 and 28 months, in the course of a week. In the next few minutes, I will share my secret method, and hopefully, you too can say good-bye to diaper doody, err, duty, once and for all!
Step 1: Readiness
Around the age of 22-24 months, a toddler will exhibit signs of readiness. Conscious pause in play to poop, whining to be changed when wet or poopy are some of these signs. Also, having the verbal ability to communicate the act (a simple "pee-pee and poo-poo will suffice) is important. Make an effort to determine how long the toddler stays dry on any given day. This means checking every hour for wetness. When the toddler can "hold it" for at least an hour, preferably two, he or she is ready for the next phase.
Step 2: Doo As I Doo
It may sound strange, but kids learn from example! About a week or two before starting the final phase, make a scene when you go potty. Don't worry, the child will not know you look foolish. Standing outside the bathroom door, grab the front of your pants and put an apprehensive look on your face, and say something along the lines of "oh, no! pee-pee!" and dash into the bathroom. I guarantee the toddler will follow out of sheer curiosity and to see what the heck your problem is. If you aren't comfortable doing the deed in front of the child, pretend. Perform that act once or twice a day. Within a week or two, you are ready to proceed.
Hint: If there are older, potty-trained children around, the toddler will almost likely want to know what on earth is going on in the bathroom, and often will pick up clues by watching them instead.
Pick up a potty chair with the child. A simple potty chair is best. No fancy gadgets with bells, lights and sound effects. No toilet paper holder. No book rack. Just. A. Potty. Chair.