After i finished the anime, i went on to the Visual Novel.
Every time Nagisa showed up and her theme played, i felt like crying. So, what i did was used Nagisa's theme on repeat while i slept and sat online. Was terrible for the first day or two, but after that i became immune to it.
Then i stopped listening to it after i beat the Visual Novel, and a few weeks later i went to listen to it cause i liked the song, and my immunity was gone.

that is one powerful anime.