Duty of doing something or taking care of somebody/something (It's a Noun)
Responsible
The activity of learning about something without a teacher to help you (It's a Noun Phrase)
Self- study
Feeling sure about your own ability to do things and be successful (It's an Adjective)
Confident
Skill that is necessary or extremely useful to manage well in daily life (It's a Noun)
Life- skill
The ability to use your time in an efficient and effective way (It's a Noun Phrase)
Time- management
The act of finding ways of dealing with problems (It's a Noun Phrase)
Problem- solving
