Isn't it great if you can control your feelings all the time? Isn't it great if you feel 'peace' all the time?
To recognize your mind's activities is the first step. Then, you can start training your mind as your subordinate. Your mind is tremendously powerful but it doesn't know where to use that power. You need to direct the power of your mind to your purpose in life.
“You either control your mind or it controls you.” — Napoleon Hill