You are making no sense. The statement "consider yourself free to take the time to live in history" means "you can follow your own projects - as opposed to devoting oneself on a single task".
How can you read that «as constraint and limitation»? You cannot read a banana into a pigeon if not for performance art. What has «think[ing] for themselves» to do with the said concept?! It is fully inconsequential. According to which mysterious theorem should "consider yourself free to be active in the world" have any relation to cognitive dependence?!
It is an abuse of the statement when it's immediately contradicted by explicitly setting a specific task as "most important". I read how it was written as "don't be too ambitious, don't be worldly, have a lot of kids", a regressive viewpoint.
How can you read that «as constraint and limitation»? You cannot read a banana into a pigeon if not for performance art. What has «think[ing] for themselves» to do with the said concept?! It is fully inconsequential. According to which mysterious theorem should "consider yourself free to be active in the world" have any relation to cognitive dependence?!