How I can test my business analyst skills? How I can know I am a good business analyst?

Thanks for this valuable information, my question now is: if I am working on three different projects in 3 different domain as you mentioned in your examples, do I have to follow the same steps (standard BA steps) in all projects? May you think this question is a stupid question, but really I need to know the answer to this question please, thank you!

Sincerely,
Hawazin

As mentioned good and bad are subjective views of something. The best way to do it is to use a performance scorecard to check where you are in respect of different objective targets. I have uploaded two documents that might be helpful to you to this location on onedrive - https://1drv.ms/f/s!AhZeRg3QiaFFi2vTVbplpC5N5Gzw

Typically this sort of assessment would be done by your peers and/or management but it is helpful for self-assessment if you are committed to being honest with yourself. Keep in mind that while the core competencies apply to any situation, the KPI's can vary depending on your organization so this is only an example of what would typically be measured.

Hope this helps.

Harwazin and Munis, sorry to write an answer. If you search into the PMIs and IIBAs guides (remember: because are guides then are a list of proven practices, no more than that) you will find an activity where you have to "select the solution approach". It does mean that for different solutions (solution = "the thing" to be created PLUS "the process" to create it) the business analyst is on charge to help the organization the way to do things best fits for the intiative. For example, in my actual work place, we have five different life cycles defined and the same people is working at the same time in more than one initiative, for example using predictive and adaptive life cycles at the same time.