My oldest boy, dear thing, much as I love him, has been nearly impossible to toilet train. We've been battling with this issue for a solid three years!!
Although now I am happy to say (you wouldn't believe how happy!) he has been dry every single day for a good two weeks now which is, trust me, no small feat for this child. The horrors endured, the trials, the tribulations, the screaming, the crying, the beating of heads against walls, the tantrums... all mine of course, X didn't really care... and finally we have seen the light at the end of the tunnel. We have made it through to the other side. I think I can now officially say he is fully toilet trained. (Although now I've probably jinxed it, and started him on a backward slide into urinary oblivion).
I am so overwhelmingly relieved that he has finally achieved this goal, we have showered him in praise and rewards - ok, not really showered, but we have told him how proud we are, and gave him special treats and $10 to spend on whatever he likes - the usual bribery-type things. Bedtime dryness is the next hurdle although I am in no hurry to start running down that 110m track!!
T has graduated to wearing undies to bed at night - so far, two out of three nights he's been dry right through. Fingers crossed...