Or: What to do when you are prevented from doing your best work.
By that I mean when you need to seek permission to implement changes, and the person with the keys usually hems and haws either by overthinking or seeking permission somewhere further up the line.
It would seem that there are only two options for the short term and one outcome for the medium or long term:
1) You quit. Find some other clients or employers who would better appreciate your working methods.
2) You create an alternate version of the website/blog/marketing campaign/what have you and work on that one. Eventually, you come back to your client/employer and pitch it to them.
Eventually, 2 will lead to 1 because you will realise that your subject matter expertise far outstrips what your current clients/employer can pay you for. Also, there’s the thing about implementing the changes. If nothing is going to get done, might as well not do the work.