be self-motivated係點解...

be self-motivated(是形容詞)=自動自覺,主動; e.g. Mary is a self-motivated girl. John is self-motivated. You must be self-motivated.

be self-motivated is to tell people to take action on their own incentive, i.e.

要主動，不需別人提醒或催促 !

If you are still unclear, please ask again.