Tobic about self motivation !

In definition,

Self-motivation is simplest form or a the force that drives you to do things.

1. To Have a cause which you are pursuing

Explanation:

can not think of a more powerful source of motivation than a cause you care about. Such things can inspire you to give your absolute best even in the face of challenges. It can make you do the things you thought impossible.

Personal drive to achieve, the desire to improve or to meet certain standards;

A brilliant Mind, Andrew Carnegie once said;

"People who are unable to motivate themselves must be content with mediocrity, no matter how impressive their other talents".

And Commitment to personal or collective goal Initiative, which he defined as ‘readiness to act on opportunities’; and

Optimism, the ability to keep going and pursue goals in the face of setbacks. This is also known as resilience.

the words "strangest" and "unusual" suggest (:

a. "to practice" is the best phrase to complete the sentence.

explanation:

during the summer, she likes to practice her soccer skills so that she is ready to play in the fall.

(note that : all the other options "the practicing of", "practice for" and "to do a practice on" are inappropriate as they make the sentence grammatically incorrect.)