Hi Michael! Thanks for the comment.
To answer your question, yes, I think we can all be our own worst critics sometimes.
The added value of making deliberate choices regarding what your ‘art style’ is and is not, would be that you are technically setting ‘goals’ for your work.
When you have finished creating you will be able to see whether you have met those goals, and as a result you will most likely be more satisfied than if you had not thought about it at all.
I hope that makes sense! :)