Directing attention on body parts

In daily life I'm trying to sense my body by directing my attention to a body part ( e.g lips , throat ) while still engaging with activities . I know when I feel a sensation on that body part my attention is there or that body part is now included in my attention . Emotions and thoughts are so fast and most of the time I get Identified with them . But at rare moments where I manage to keep my attention on part of my body, help me to view my emotion or thought without totally identifying . I really want to practice , so would like to start from most basic , Mindfulness of body . I tried mindfulness of breathing . I had following experience , When I pay attention to breath , its natural rhythm changes . Feel like I forcefully control the breath . Is there any teaching in Buddhism , that could use every day life to keep the attention on body? Instead of sitting meditation .