YES! We can.
We first teach our body and mind what is the relaxed state using meditation methods. If the body and mind experience it several times, they remember. Then, we keep practicing to go to the relaxed state every day. You know both the stressed and relaxed. If you feel you are going to excess stress, you use the relaxation method to return to the relaxed one. You have the control, external events cannot control you.
A 15 min practice will save your life
Some of my students found that they could fix shoulder ache and headache by this relaxation practice. The body and mind repeats our habits. If you make a positive habit, it brings us a positive result, if you make a negative habit, then it brings us a negative result. You may be able to solve issues just learning how to relax. On top of that, once it becomes your habit, you don’t even have to make an effort to do it, your body and mind will naturally do it. I think it is worth to practice, isn’t it? So, let’s practice.