A slight change of perspective might help a bit here. As a senior developer, you're not so much expected to produce code as to help the team produce better code. Your code does not matter so much, and code *ownership* does not matter so much either. It's the whole team that, through code writing and reviews, produces quality code.
I’m just realizing I might smile too much, and that shows in the pictures. Day job: U. of Granada prof. On the side: blogger @jjmerelo and writer @lujoyglamour