It sounds complicated but we all know mind is there. By the way, mind is not physical, mind is not your brain. Mind is something that controls your activities. Mind is the cause of your activities, so to speak.
If you understand mind, you are able to control your life better. You are not your mind. Neither you are your body. You have your mind, so you have power to control your mind. Don't be controlled by your mind, which is a recipe of disaster.
How to control your mind? Watch it! Be aware what your mind feels, what your mind thinks. Then you will be able to be a watcher. If you continue the observation, probably you will be able to understand how it works. Now you are the master of your mind. Not the other way around.
Once you establish the habit of watching your mind, you will have gained much power over it and it helps you to control your life much better. What do you think?