Information from the books, for the most part, weathered
Is this normal or the feeling that I degrade, truthfully?
Completely. That would be to learn all you 10 lives are not enough. Appreciated the ability to quickly solve tasks, even when such did not face never.
Perhaps we should reread the books or to take on a new(but what if I can't apply the knowledge in work?
Books on specific technologies, by language for example - to reread is not necessary, the information most likely there is already obsolete)). On a more General "deep" things - makes sense.
On pet projects with no time to study+work+3 hours on the road sjezdit all the time
You must understand why to do a pet project. This is important. Many people think that "write my super cool mind and you want harmony in this world." Alas, it is not, the likelihood that you will use your own experience at work is rather low still depends on your "weight" in the company.