Try to switch to lower sugar, higher fat/protein products with as few ingredients as possible. Fat is generally good for you and helps satisfy and keep hunger controlled. Protein is similar in this regard and the two together are really good for dealing with hunger. Try to avoid simple carbs since they break down into sugar immediately; if you must, have them with a fat and protein to help reduce the glycemic load. For example, if you want a bagel, use a good amount of butter and/or cream cheese to help ease the escalation of your blood sugar.

Stay on the outside/perimeter inside of the center aisles in grocery stores. That's where the money really is for them and its mostly junk. Also, checkout the organic aisle(s) as most people think its too expensive and eschew all the deals that are happening with the actually decent food that otherwise goes bad or takes up needed space like any other food products.

Buy lemon/lime juice or pure cranberry juice and use it to make flavored water to help distract you from sugary drinks. Get a SodaStream to make soda water if you like and experiment with various pure juices to flavor the soda. Try to avoid fruit juice since its basically pure sugar without any of the fibre or need to digest that comes with actual fruit. If you must, go for ones that are 50% less sugar and do not use any sweetener (just the constituent fruit juices themselves) like Oasis Hydrafruit or whatever but still try to move away from juice.

Hemp seeds are insanely nutritious, use them wherever you can. Particularly salads, parfaits, shakes/smoothies, etc. They have it all: healthy fats, fibre, minerals and vitamins, etc. Great for satiety and pleasent subtle flavor.