A can not do attitude

Yesterday I was sent a link to the following text. A beautiful lady, who's working as a coach, writes about how one can change his doubtful attitude to the correct, can-do one.
In the mention article a reader was suggested five easy steps.

My last ten years showed me, that sometimes such thing as a can-do attitude is not such a good thing, actually. And looking back at some situations I would prefer to be more reluctant in accepting deals and suggestions to do some work.

That's why people, who work, often require

The five steps to the Can-Not-Do Attitude.

1. Say "I need some time to think" first.
Everybody has faced a new opportunity plenty of time. A new cool project proposal, which could bring money. or be simple interesting. It's so tempting - to dive into a new project, leaving all the boredom of the old ones behind.
It's really better to take some long time to think before you agree.

2. Develop a realistic point of view
We are used to live in a plenty of world two of those are so called Real World and the Land of Dreams. In my opinion the only real thing in the Real World is a possibility to measure.
So, it's really better to perform a straightforward calculations to identify whether you "Can Do" today.

3. With the problem in mind, estimate the requirements
In youth people tend to take any chance to do what they like. Despite the approaching exams, despite the previous incomplete projects. It's always challenging. And it always seems like a piece of cake. For me almost every new project seemed much easier at the glance, than it appears afterwards. Keeping this fact in mind, you should identify the approximate amount of effort required, and then frankly answer a question - "When am I going to do this?" After the job, at home? During the weekends? During the daytime, at the office?
So, when you clearly realize, that next half a year you will spend your weekend working, it makes you doubt.

4. Be open to other people - check the team availability
Could this work be done better using different qualified persons working in a team? If it could, and if you don't know such people, I mean, know by your previous projects, then don't initiate!

5. Do it your way
Instead of working hard for different tangibles, like the most people in the world do, try improving your skills by learning and meeting new people, who share your interests.
Despite the banality of the above - sometimes it's better to avoid following the first desire, and to thing a little bit.