Ow does it matter for me to use Orems theory of self-care in my praxis in the maternity department?

For refrences please use this three articles and book,
1.Hart MA.Nursing implications of self-care in pregnancy.(1996)

2.Renker PR.Physical abuuse,social support,self-care and pregnancy outcomes of older adolescents.(1999)

3.Alligood, M., & Tomey, A.(2002). Nursing theory: Utilization and application.((BOOK))

4.Responses of pregnant women to potential labor symptoms.(1997)

Dear writer,
Im undrgraduate BScN in nursing field.