Isabella leads a very busy life. She attends the local university, interns for a large family planning center, and works weekends at a drugstore. To better her health, Isabella tries to keep her mind focused in the present and on the situation at hand. She tries hard not to let her thoughts stray to what she has yet to do or what went wrong yesterday. Isabella is practicing $\_\_\_\_\_\_\_\_.$

a$.$ self$-$fulfilling prophecy

b$.$ mindfulness

c$.$ personal agency

d$.$ self$-$talk