Yes, when I had gestational diabetes I dramatically reduced my sugar intake. I haven't cut it out entirely (I still bake something sweet every couple of weeks and have the odd sweet treat), however, dramatically less than before. It took a lot of getting used to, but over a time your taste buds do seem to adjust and it's surprising how crap the sweet stuff I once loved actually taste (mr kiplings fondant fancies were my favourite!)
Most of the treats we now have rely on natural sugar rather than refined. I think it's healthy to get all the crap out of the house, but have a little treat every day and make it as healthy as possible as otherwise you just end up really struggling. So things like:
Baked peaches (get them when they're really ripe, cut in half and put in a baking dish cut side up with a bit of butter, scatter some vanilla seeds on top, and some ground almonds, bake for 20 minutes). Serve them warm with some greek yoghurt and they're a really nice pudding!
Similarly greek yoghurt with a few berries and some ground almonds makes a really nice desert. Or on a hot day freeze the berries and blend with the greek yoghurt to make a quick 'ice cream'. Similarly fruit ice lollies are always an easy option (frozen mango blended with greek yoghurt makes a good one...although the mango is pretty high on natural sugar).
For a breakfast treat goodfood has a great blueberry american pancake recipe with no sugar (though we do serve ours with honey, so it's not exactly sugar free at all!). But you can also find some decent vegan and oat ones which don't use flour.
Or a few squares of dark chocolate melted in cream to make a lovely hot chocolate, or make a ganache and cool it into a chocolate pot (can add orange zest etc for different flavours)
Apple and peanut butter was always suggested as a good snack, but it never appealed to me!
Are you cutting back carbs as well, as it sounds like you may be in your OP? If so, don't cut too dramatically, as you will be hungry, and it'll drive you mad with cravings. Try to go for a more balanced plate where the carbs aren't the main star, with wholemeal versions where possible (brown rice / brown pasta)...Having said that I just can't get used to wholemeal pasta at all, I'd rather just have less regular pasta and bulk it out with a salad instead.