One of the most difficult things, I think, to remember to do is to always remember why you are disciplining your child– the end goal– and try your hardest not to get caught up “in the moment.” 

To that end, I suggested that you plan what the punishment for a particular “crime” will be before you get in the situation, and that you also enforce your requests.  The last thing that a child needs it to wonder if mom or dad “really mean it this time…”

As I was reading around the net, I found The Queen posted how I felt with Biblical responses.  Especially the first couple:

I say: “Lord, all they do is fight and grumble.”
He says: “A hot-tempered man stirs up dissension, but a patient man calms a quarrel.” Prov 15:18

I say “But Lord, there are SO many quarrels.”
He says “A gentle answer turns away wrath, but a harsh word stirs up anger.” Prov 15:1

I say: “Okay Lord but I get so angry and I lose it and I can’t help it…”
He says: “The wise woman builds her house, but with her own hands the foolish one tears hers down.” Prov 14:1

So take heart, mom and dad.  God never asks us to do something that He will not also provide the strength with which to do it.  Rest in Him.  Pray to Him.  Rely on Him.