Diabetes Guidance. Advise and guidance.

I'm a 27 years Male (unmarried) with no any medical conditions until recently checked my blood sugar levels which was, 142 mg/dl Fasting, PPBS 204 mg/dl and HBA1C of 7.4%, mean blood glucose 166 mg/dl. As I was feeling more thirsty than normal and recently had very bad food diet, I decided to check my sugar levels, apart from it I don't have any other classic symptoms. There are many people in my family who have diabetes as well. I have consulted doctor and have been advised to be on strict sugar free diet and exercise till my next appointment. My concern is, I'm in a state where i have started worrying about my future life as I have heard people with diabetes talking more about being careful always and too much observation about themselves , which kind of putting me into depression thinking I can't lead normal life. I get into immediate worry when I hear keywords like diabetes, sugar, diet, gangrene etc., Trying to seek advise and guidance. Thanks in advance.