I feel exactly the same thing. I'm 34 and I feel my brain is not working anymore. I use not to be the most smart person but always have been the quickest to thi

I feel exactly the same thing. I'm 34 and I feel my brain is not working anymore. I use not to be the most smart person but always have been the quickest to think, in particular for code. Now I just trying to learn 1 or 2 new things (like: improving my english - I'm not native-, learning angular 2, learning some fancy thing in CSS) I fell like I can't success in anything.