What you are expressing is very common, particularly for technical BI analysts who are used to the engineering ‘build’ process, rather than analyst who have been working more as evaluators in parts of organizations other than IT or BI.
There's a lot of blogs, books, etc that I could recommend, but the best place to start is with this 'Guide to Creating Dashboards People Love to Use' from Juice Analytics, which is helpful for process:
I'd also recommend that you follow the Tableau Public Blog (if you don't already) as you will be exposed to ton's of information, resources and people. Tableau Public | explore, create, share.
FYI - ignore stuff like this How to Successfully Manage BI Dashboard Projects - Enterprise Tech Central
That is the old BI process that will only result in the same old product being produced.
Hope that helps - don't hesitate to contact me if you have more questions. email@example.com
Purchase the excellent book "Tableau Your Data" from Dan Murray of Interworks. You will never create Tableau Dashboards the same after going through Dan's book. Of our 50+ Tableau Desktop users I'd say 30 own a copy and use it for reference on almost a daily basis.