Here is my usual spiel on diet (in this case it simply means "what I eat", as opposed to a drastic short-term weight-loss change)...
Real whole food, is the order of the day... preferably local and in-season, grown/reared on nutrient rich land... grass-fed beef and pastured chickens for example. This means eat whole (unprocessed, unpackaged, unadulterated) food, which includes a natural balance of fat, protein and carbohydrates (as well as vitamins, minerals etc...) ...there really is no need to be afraid of natural fat... it's gotten a bad rap.
Those of us with Diabetes need to pay particular attention to the foods which have the most effect on our Blood Glucose (BG) levels. There are obvious things to watch out for like candy, cola, cakes and sweets (these are high in refined/concentrated carbohydrates)... next in line are the "white" foods like bread, pasta, potatoes, rice, breakfast cereal... but even something assumed to be healthy like orange juice has about as much sugar as a cola... fat reduced milk can have an higher proportion of lactose (sugar), especially in low-fat products such as yogurts which may have High Fructose Corn Syrup (HFCS) added to replace the fat... and so it goes on. That does not mean you need to feel deprived or hungry to eat this way, not by any means. You may even find you can work in an occasional family cake... for example. The keyword there being "occasional" as it used to be when our Grandparents baked cakes only for Birthdays etc... not everyday (muffins, donuts, pastries) for breakfast.
You may have heard the phrase "eat to your meter" and this deceptively simple message is very wise... test around your food and figure out what works best for YOU.
Some ideas for snacks: nuts, cheese, dark chocolate (70% cocoa or higher), pork rinds/scratchings, cold meats, boiled eggs, peanut butter.
While we are encouraged to eat "so many servings of fruit and veg daily", many of these can spike our BGs so test, test test... for many of us, green leafy vegetables seem to work best... but you may also help reduce/slow the BG spike by mixing foods... for example: instead of eating an apple by itself, try just half the apple in slices with some peanut butter or cheese... or have a few berries with some cream.
I'd suggest that BG control be your primary aim... while minimising the need for insulin which is the major fat storage hormone -- reducing excess fat mass, improving cholesterol/lipids, hypertension etc... all these tend to improve with more normal BGs.
I am not big on setting unrealistic "exercise" goals... flogging yourself at the gym... unless you feel especially motivated to do so. I think you are better off with something sustainable in the long term. There are many health benefits of activity but I'm not convinced that losing weight is a major one. I do believe in building activity into your daily routine (rather than finding excuses for missing the gym)... take the stairs, park further away, get off the bus a stop earlier... go for a walk at lunchtime... take "smoke breaks" at work where you walk around the block instead. Physical activity can help with your BG numbers as it tends to lower Insulin Resistance (IR) , as well as using up glucose but as with food, it is advisable to test and see how it affects you.