Hi Nixo and welcome! Diabetes is one of those "patient managed" diseases, so I'm not surprised your doctor isn't much help.
The best way to deal with it is to learn all you can and then apply it to your life.
Don't expect to be perfect, or you will set yourself up for disappointment.
DO be proactive though! Many doctors find it easier to hand out pills instead of teaching patients about a healthy diet and exercise. This can do wonders to help some of the problems associated with diabetes.
Also realize that illness, stress, and hormones within the body can all affect glucose levels. The key is to learn how to MANAGE this.
Have you seen a Certified Diabetes Nurse Educator or dietitian?