I was potty trained when I was ready. This happened to be age 5... A little odler than usual! I was still in safety panties or whatever they were called back then.
I saw a neighbor boy going to pre-school and wanted to go too and my mom said I couldn't, unless I could wear big-girl panties and go in the toilet. I was lazy, what can I say!? But once I had an outside reason to do it, I did it instantly.
I'm weird like that. I don't often do something just for the hell of it. I need a reason. Outside pressure.
My brother was funny. He was around 3 years old and we moved to a new apartment. My mom did this:
Mom: "George, there are no diapers in this house."
George: "Nooo?"
Mom: "Nope, so you'll have to go potty like a big boy."
George: "Oh, okay!"
And he did! lol!! EVERY child is different. Night-time training is hard, too. I was wetting the bed till I was 6 or 7, and finally a book helped me at last.
I talked about it to my mom recently, because what
I remember is the book telling me to have an alarm (like a fire truck) go off in my head at night when I had to pee. My mom says that the book actually guided parents to SET an alarm for the child initially, to wake them up halfway through the night to pee. Eventually, the alarm was weaned away and the child simply did it automatically. I can only imagine how many weeks/months it took to train that behavior O.o I still do it, too, especially if I go to sleep early in the night like before midnight and sleep a full 10 hours. I pop awake halfway through the night, and I need to pee.