Hey! I had braces for about 5 years growing up, so here’s a couple tips to make things easier.
For starters, every time they adjust those brackets, it’s going to hurt. Make sure you’re prepared that day with some light painkillers or ice cream or something that will help lessen the pain. Also, do not eat anything after the adjustment that you will need to chew a lot on. I recommend soups (like tomato soup) or something very soft. Personally, I lived off of ramen those days. But beware the spoon/fork—if you hit it against your teeth by accident, it’s not going to be pleasant. 
Second, sometimes those brackets might be too rough and have too many jagged edges and cause problems. That’s okay, you can talk to your orthodontist about it, and they may give you a special kind of wax (or you could request it). Break off a small piece of the wax and smooth it over the bracket causing problems. This should make it so it doesn’t feel as rough.
Unrelated to pain, but I also recommend stocking up on interdental brushes. Those are the short, skinny pick-like things with the bristles on one end. They’re good for cleaning under wires.
Anyway, I think that’s all I’ve got for now. Best of luck to you, and I hope you’re feeling better soon!
