I'm a decent singer, and I'm used to singing different acoustic parts (e.g. as part of an acappella group) with no problems.
But for some reason when singing backing vocals in a band, I lose my pitch all the time. It feels like I can't hear myself, which I suspect has to do with the fact that my voice is coming from some monitor or speaker together with the lead vocals and the other instruments, and I can't find it in the mix.
What can I do to better track my own voice when singing backing vocals on a mic, other than the obvious "turn up your mic's volume"?