All four of the reasons you cite come down to one thing - the use and misuse of time.
Very few people truly value their time.
That's how you interpret the problem, George - I don't want to argue, your fundamental principles are sound, but I want to say that there are other ways of expressing a lot of "time management" concepts.
Let me run through those four points -
1)"Keep reading ebooks and keep discovering something without focusing on specific thing".
This is a "trust" problem. Very rarely will people follow something that does not accord completely with their own feelings. If you don't trust the advice someone gives you, you will never get started. If you ignore something they say because it is not in synch with your value system, you may jeapordise the whole project.
I've seen a blog post somewhere recently called "Follow Your Own Guru" which said, in brief, " If you don't know how to make money, you have to learn from someone - stop your search and follow a practical path which you can broadly ACCEPT into your belief system. WHEN you start to make money, start examining other methods and adding your own refinements".
2) "Registering a lot of domains and later on abandoned them because he have no time and/or discovered another domain".
Learn to make the domains work for starters. George would say minimise your "time" on them, I say minimise your "effort". Whichever you choose, doing nothing is what is called a write off. If you are new to this stuff, get some value back out of what you have invested.
Do some minimal site construction using free content and a free template. Shove them up on free hosting with links to all the other domains you bought at the same time. After a few months, a link to a new site from one of those is valuable. Doesn't matter if no-one looks at it.
I'm having no success with Storebust, but I am still putting domains on there in hope. A site that is getting a little SEO and exposure for minimal effort can be taken off there and used for a proper aff site later (and it gets it over the sandbox period).
3) "Wanted an overnight success."
It actually used to happen, up to about 3 years ago, when keyword domains were "free to register" and available, and Google hadn't twigged that minisites were exploiting its mechanisms. Put that point down to "TIMING". Try to make sure that your info guru is giving you stuff that works now, not a couple of years ago.
4) "No perseverance and lack of focus ..."
Trust and belief again ...
Keep working until you show yourself that you are wrong (no good showing yourself that you quit too easily). Your guru says "this works". If you think it doesn't work, you might be giving up to easily.
If you can't focus your own ideas, focus on the ideas and concepts of your guru, even if they don't agree with your feelings, until you find ways to bring them into your belief system.
About thirtyfive years ago, I told a 16 year old apprentice how to become a miser and save up pennies to get the Gibson guitar he really wanted. It was just an exercise in practical focus and objective setting (thank you, Dale Carnegie), and he believed me because I had a similar Gibson guitar already (actually funded by a bank loan). I got canned about 3 weeks later (because I got up the boss's nose, and he had to do it quick or he would have had to give an outright reason). He always said I could criticise him when I outqualified him - Jack Kershaw, you always were a self opinionated git!
So about a year later this kid meets me in the street and gets enormously gratuitous because my plan worked for him, and he got all the Gibson guitar and Marshall amp he wanted inside of nine months. At the time, I actually found the whole episode a salutary lesson in how powerful influencing techniques can be. Frankly, it scared me ...
On reflection, I would quote it as an example of how a person without the actual practical experience might just be giving you the product you need.
I know I have freely given ideas that made money and gave kudos to other people. They have returned this with thanks, favours, and the occasional pint of beer ...
