Been married for just under 1 year, so perhaps my advice is somewhat less sage than a few others here, but I'll throw another two cents in.
To this, I would add that you can almost always use positive language rather than negative language even in situations of conflict. Turn things into "We can..." and "Let's try to..." instead of words like "never" and "don't" etc.
I thought this was great as well. Whether you feel like you have one specific love language or not, there's a useful framework in understanding different ways you & your spouse share affection for one another. It can open your eyes (and ears) to understanding ways that your spouse is showing affection that you might not be noticing, and
Agree, but a useful flip side is also "Don't get too worked up over little shit, either." You can make each other happier by doing the dishes, taking the trash out, and so on, but there's almost never a good reason to hit the roof if he/she forgets to do a chore (on sparing occasions, that is). I'm a fairly neat person; my wife is on the messy side (leaving her purse on the floor, books on the coffee table, etc). Would I do this myself? No. Is it worth fighting over? Of course not.
Basement_Gainz hit on a lot of great stuff, but I'll just highlight a couple:
^IMO, these are basically the same thing. It's been mentioned several times, so all of us are in the same boat. Many of us start trying to fix a problem immediately; but what she really needs is a chance to air her frustrations and process her feelings first.