I feel like a e-hoarder, I keep tabs and sublime windows open and worry about closing them as they might contain important code...
FML

I do that with tabs in Chrome both on my phone and on my PC.

I ctrl+shft+s everx time i write code (saves all edited files, you can configure it in sublime)

Close them, or copy everything to one large mega file.
I clean my np++ files every once in a while - if I did not use it in the last week.then it is probably not important.

I know that feeling too well. It started by keeping the current session in Firefox and now I'm at the point where I have 3 windows open everytime it starts up, each with 15 tabs or more (and a similar situation on mobile).
I guess a tab purge is needed soon...