I have triggers due to things I've experienced in my life. How do I stop myself from them and be able to live without having to always worry and be on guard?

Know that not all triggers are end of the world scenarios. Yes, they may hurt, but they are more likely going to be learning experiences. It's not easy to focus on yourself and focus on others at the same time. Some days are harder than others and that will be okay. Identifying what those triggers are can help you set up a plan of action to deal with them when they arise. Sometimes they will come out of the blue and you will have to take them on the chin as they come. It isn't easy, but it is manageable.