debugger

Hi, how are you?

I am new to gnome and I am working on my first bug and fortunately I've 
received help from many developers, but I'm still not able to fix the 
bug :( . I have a general question: is there any tool or debugger that 
you would recommend to keep track of the application state?, I am used 
to set breakpoints and see variable's content and I know there is gdb 
but I think that maybe it is more for low level stuff (assembly), or 
maybe I am wrong and there are features I don't know about. I guess some 
of you could point out something that could help me with this  :).

Thanks in advance,

Julio Ordonez Viales