How to minimise arguments with your partner - 5 tips for domestic bliss?

After living together for nearly thirty years (as well as being in the same workplace for 20 of those years) I may have gleaned a few tips....

1.  Listen more. There is that great remark about some conversations - one person isn't listening to the other, only waiting for his/her turn to speak.
2.  Count to 5, before replying during an argument (this is hard, I know, if you are as impulsive as me).
3.  Don't try to 'have the last word', it never works. Point scoring, it never works. My wife is always 3 steps ahead of me in an argument. I can't multi-task either. By losing, you win.
4.  If in doubt, keep shtum.
5.  At home, the regular five o'clock cocktail hour.

If only I could follow these 5 tips more. I'm pretty good at the last one, though!