Always, always, carry your Epi-pen, inhaler, and Benadryl with you. As in, keep it *ON* you.
When in doubt, go without.
Wash your hands before you eat, every time. Besides germs, you never know if you have touched something with milk, egg, or peanut residue on it.
Make sure your dishes are clean. If your plate or silverware still has unidentifiable goobers stuck to it from the last meal it held, in addition to being totally gross, it could also have something you can’t have on it. Get a new one for sure. (ick) Oh, and steer clear of anything made in cast iron. Those things are never (by definition) washed with soap and water and can hold all sorts of trouble in their “seasoning”.
If the person preparing your food speaks English as a second language, eat somewhere else. You have to feel comfortable that they truly understand what is dangerous for you.
If friends aren’t willing to make compromises for your safety, they’re not good friends. If a friend is willing to learn about and help you manage your food allergies, be grateful and cherish them! That is a good friend.
Never use a shared toaster. If you have to, use a toaster oven and line the rack or pan with foil to protect your food from cross-contamination.
Remember, labels can be deceiving. Test your label reading knowledge at http://www.allergyfreetable.com/food-allergies-label-quiz.php
Always carry spare safe snacks with you. You don’t want to get stuck away from home and starving without something safe to eat, or worse, make a bad choice because of it.