If you're using Vim to write your software, you should definitely be using CtrlP, at the very least as a fuzzy file finder.
Now, if you're clever, you might do something like "read the docs to understand
your tools better". Since I'm not, it took me a while to figure this one out! Say
you're opening a file
request.rb and you're going to jump directly to line 24.
request.rb:24 in the CtrlP buffer and it'll take you there automatically.
Tiny tip, but it'll save a little time during long debug sessions.