Advocate for wars that don't destroy realms.
Need to learn to ask for monetary compensations maybe
If you're not very active, and hold positions, give up those positions to people who are more active (assuming your realm has such).
Already did this
Don't require near-certainty of massive overwhelming victory before you're willing to commit to a war.
Definitely need to work on this
Remember, Losing Is Fun.
We all know this is a lie!