Must we master one thing before moving to the next? For example, I'm just stuck at fretting simple chords c and g. Muting while switching between the 2 throws me off and my next strum I fret right but I miss on strumming. I get it right 6 out of 10 times but the other 4 sound like crap. Is it wrong to move on to avoid boredom? Is it wrong to try to learn 2 things at the same time?

Thanks in advance

Chuck