A battle cannot be won only with strong determination and strategy, you need arms and ammunition to destroy the enemy. Similarly, in order to earn passive income you need certain resources, most of which are freely available on Internet. So what are these resources:
A fixed schedule and a flexible routine
In order to generate passive income you need to put in lot of efforts which is not only in terms of time but also having a fixed schedule. You need to take some hours out each day to work on your dreams and at the same time have a flexible routine.
This means that on the days on which you aren’t getting those dedicated hours in the evening, you will make it flexible and work for those hours in the morning or in the night.
A learning mindset and little Investment on yourself
Most of the things you want to learn as a skill can be learnt freely through YouTube and Google. The other things can be learnt if not available freely by spending some amount of your savings for e.g. if you want to learn how to become a Udemy Instructor, you can enroll one the highly rated paid courses on Udemy for becoming a creator.
I did the same and trust me the amount that I had spent on enrolling for the course was the best form of investment to develop a life time skill.