Take up a good habit like waking up early, or reading a book, exercising, meditating and many more.
Use the available time to up-skill. Learn skills relevant to your field of interest or Start a blog.
Read books, learn new skills
Do whatever makes you happy. Even if it is cooking or working out. Try to follow a routine. It will take time. But everything will be worth. Do online courses of your interest. Read a book, cook, dance. The most important Write a Journal.
You can organise your closet, finish a book, do an online course to boost your CV , learn a language , catch up with your hobbies
Make a productive schedule(whatever u feel is good for u ) with some leisure time and try to stick to it
Invest your time in learning some skill, you can check at Skillshare, many skills are there.
Schedule all your goals and keep rewarding yourself after the completion of a task. Try new things to help you get motivated.
If you are a morning person you could try exercising or doing houshold chores.
If a night person , try cleaning you cupboard, desk.
Read a book
Learn a new language or a new skill.
Go for an online Internship
You can invest your time in some online courses that will surely help you.