How To Cure Urinary Incontinence?

I am consern about my 7 y old daughter who has a urine problem when my husband and I asked her how we can help she said it feels good to hold it ant it feels good when I tickle my self and make my self go tinkle. She urinates her self almost every at any place, car, friends, houses, furniture etc. It is obious she is getting a reward of a tickle feeling but this is a habit we can t make her brake it is affecting our lifes too. We taken her to a urologist and they found nothing wrong wilth her bladder. We taken her counseling and they suggested for us to wait untill she feels like not doing it any more, this is been going on for 3 years now. What else can we do?