In Over My Head

Have you ever done something and somewhere during the beginning of it you feel like you are learning Incan while speaking Chinese and living in Greece?  This is the feeling that I just had while trying to learn my new position at work.  I know that I can do this job and that before I know it all these things that seem like a completely different language and skill will become second nature, but until that point I am just hoping that I can tread water long enough to get there.